Topic: angular list of topics
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	A rectangular prism		2012-04-05
		From Tori: How do you find the base height if the base width is 10ft. The height is 7ft. And the volume is105ft. Answered by Penny Nom.
	Triangular numbers that are square		2011-12-27
		From Luke: The “TnS” is a positive integer which is both Triangular number and Square number. For example, 36 is a “TnS” number since 36=1+2+3+4+5+6+7+8 (Triangular number) and 36=6x6 (Square number). What is the next “TnS” which is greater than 36? Answered by Penny Nom.
	The volume of a triangular shaped aquarium		2011-05-07
		From Jeff: HI, I searched the site but really couldn't find my answer, at least that I could understand! I have a triangular shaped aquarium ( think of a cube, except its an equal triangle shape). all 3 sides are 48 inches, and it is 34" tall. Can you please tell me what the volume is in gallons? Thanks! Answered by Penny Nom.
	The volume of a triangular pyramid		2011-04-15
		From Chelsea: There is a triangular pyramid which is an equilateral on the base with all sides 16.5 and the height is 25. I have to find the volume. Please help! Answered by Penny Nom.
	Slicing a rectangular parallelepiped		2011-02-23
		From tom: a) Pass a plane containing a vertex of a rectangular parallelepiped and a diagonal of a face not containing that vertex to cut a pyramid from the parallelepiped. What fraction of the volume of the parallelepiped is the volume of the pyramid thus cut off? b)Pass a plane through a cube of edge 8 in so that the section formed will be a regular hexagon. Through each side of the hexagon pass two planes, one plane containing one of the two vertices of the cube which are farthest away from the plane of the hexagon, the other plane containing the diagonally opposite vertex of the cube. Find the volume of the solid bounded by these planes. c)three of the edges of a rectangular parallelepiped that meet in a point are also the lateral edges of a pyramid. What fraction of the parallelepiped is this pyramid...? you know the my only problem is how to illustrate this one...if only i could ...can you help me....all I need is the drawing and I can do the rest ..it's fine if you'll only answer any of these but I'll be thankful if you will do the three :).... Answered by Penny Nom.
	Angular speed		2010-12-12
		From Jason: 7 in. pulley traveling @ 175ft/sec. What is the rpm? Answered by Stephen La Rocque and Penny Nom.
	The length is twice its breadth		2010-12-09
		From jenu: The length of the rectangular field is twice its breadth. A man jogged around it 5 times and covered a distance of 3 km. what is the length of the field? Answered by Penny Nom.
	A rectangular solid		2010-12-08
		From ryan: Good day! Have a question on rectangular solids. We were asked to find the dimensions of a rectangular solid, we were only given the volume of the rectangular solid, the total area, and the altitude. I tried using the volume of the rectangular solid and was able to get the area of the base, but I don't know how to get its length and its width. Hope you could help me again. Thanks! Answered by Penny Nom.
	Angular speed		2010-12-03
		From Julie: If the angular speed of a circle is 360 degrees divided by the time it took to rotate, how do I calculate ones that have greater rotations than the amount of time? I mean, you calculate the angular speed of a merry-go-around that spins once every 5 seconds by doing 360degrees/5 sec, but how do you calculate a merry-go-around that has 16 rotations every 4 seconds? Answered by Penny Nom.
	Rectangular arrays		2010-09-29
		From Kim: My 4th grader has started working on rectangular array that shows 2 factors of a number. The problem reads on centimeter grid paper draw as many arrays as you can for each of the #'s 2,3,4, 5,6,7,,11,12,15 and 16. That would be great except I have no idea what they are talking about and I cannot offer any help to my daughter. Answered by Penny Nom.
	An 18ft round pool		2010-07-19
		From christine: will an 18ft round pool fit on a 12x16 ft rectangular cement slab? Answered by Tyler Wood.
	A rectangular prism		2010-04-27
		From Savannah: A rectangular prism is made of exactly 8 cubes. Find the length, width, and height. Answered by Penny Nom.
	What are the dimensions of the box?		2010-04-13
		From Steven: The longest rod that will just fit inside a rectangular box, if placed diagonally top to bottom, is 17 inches. The box is 1 inch shorter and 3 inches longer than it is wide. How much must you cut off the rod so that it will lie flat in the bottom of the container? What are the dimensions of the box? Answered by Robert Dawson.
	Pyramids and parallelograms		2010-04-01
		From Vivi: Hi, my name is Vivi, and math teacher is giving a geometry test. I tend to forget how to find the surface area and volume of triangular pyramids and parallelograms. Do you have a way of remembering how to find the surface area? Answered by Harley Weston.
	A champagne pyramid		2010-03-22
		From Kathy: I have 680 champagne glasses and my pyramid can only be 15 levels high. How many glasses need to be on each level? Is there a formula I can use? Answered by Robert Dawson.
	Angular velocity		2010-03-17
		From Lindsay: Determine the angular velocity, in radians per second, of a 14-inch car wheel, if the car is traveling at 60 miles per hour Answered by Harley Weston.
	The base area of rectangular prism		2010-03-05
		From Desiree: How do you find the base area of rectangular prism that has 4 cm by 4cm by 6cm ? Answered by Penny Nom.
	The center of a rectangular room		2010-02-16
		From Diana: Consider a rectangular room, 15 feet wide, 30 feet long and 12 feet high. What is the exact distance from any of the 8 corners of the room and its geometric center? Can you write a generic formula for such a distance? And if we keep the same proportions on all dimensions, can you write an expression for the same distance as a function of the floor perimeter? Answered by Penny Nom.
	A triangular prism		2010-01-13
		From Breon: what is the formula for a triangular prism? Answered by Robert Dawson.
	A triangular pyramid		2010-01-05
		From ally: how many vertices, edges, faces in a triangular pyramid? Answered by Robert Dawson.
	Angular speed		2009-11-19
		From Atalie: The engine of a sports car rotates at 5000 revolution per minute. Calculate the angular speed of the engine in radians per second, given that 2pi radians = 1 revolution Answered by Robert Dawson.
	A triangular shaped ditch		2009-11-12
		From Tim: I am planning on constructing a triangular shaped ditch the measures 550 meters in length, 6 meters wide at the surface, .3048 meters at the invert of the ditch and 2 meters deep. How many cubic meters of material will have to be excavated to construct this ditch Answered by Robert Dawson.
	Angular speed		2009-08-04
		From Mary: The engine of a sports car rotates at 5000 revolutions per minute (rpm). Calculate the angular speed of the engine in radians per second. Use 2 radians = 1 revolution. Answered by Penny Nom.
	The surface area of a rectangular pyramid		2009-07-13
		From Shivani: What is the surface area of a rectangular pyramid with a length of 6 inches, a width of 7 inches and a SLANT height of 4 inches. Answered by Penny Nom.
	Triangular Numbers		2009-06-16
		From Chinonyerem: Question from Chinonyerem, a student: Each of the numbers 1 = 1, 3 = 1+2, 6 = 1+2+3, 10 = 1+2+3+4 ,... represents the number of dots that can be arranged evenly in an equilateral triangle:                             .                   .        . .         .         .       . . .             ... .      . .      . . .    . . . . This led the ancient Greeks to call a number TRIANGULAR if it is the sum of consecutive integers, beginning with 1. Prove the following facts concerning triangular numbers: (a) A number is triangular if and only if it is of the form n(n+1)/2 for some n >= 1 (b) The integer n is a triangular number if and only if 8n+1 is a perfect square (c) The sum of any two consecutive triangular numbers is a perfect square (d) If n is a triangular number, then so are 9n+1, 25n+3, and 49n+6 Answered by Penny Nom.
	The dimensions of a toy chest		2009-05-07
		From charlotta: My son needs to find the 3 dimensions of a toy chest that has to have a volume of 24 cubic feet can you show how to get the answer Answered by Penny Nom.
	Rectangular prisms		2009-05-01
		From deborah: Could you please tell me some examples of different objects in the real world of rectangular prisms? Answered by Harley Weston.
	Volume of a prism		2009-04-21
		From David: The base of a rectangular prism has an area of 15.3 square inches and a volume of 185.13 cubic inches. Write an equation that can be used to find the height "h" of the prism Answered by Robert Dawson and Stephen La Rocque.
	A rectangular open box		2009-03-21
		From tina: An open box is to be made from a rectangular piece of tin by cutting two inches squares out of the corners and folding up the sides. The volume of the box will be 100 cubic inches. Find the dimensions of the rectangular piece of tin. Answered by Stephen La Rocque.
	A dead fly is stuck to a belt that passes over two pulleys		2009-03-21
		From Jules: A dead fly is stuck to a belt that passes over two pulleys 6 inches and 8 inches in radius. Assuming no slippage,how fast is the fly moving when the large pulley (8 inches) makes 21 revolutions per second ? How many revolutions per second does the small pulley make ? How long will it take the dead fly to travel 1 mile ? Answered by Penny Nom.
	A triangular pyramid		2009-02-26
		From Craig: Can you help with this question: Write the names of the faces and the number of each kind of face on a triangular pyramid? Answered by Penny Nom.
	A rectangular prism		2009-02-25
		From Christina: I am trying to find the area of the base of a rectangular prism where one cube=_1 cu in. The Answer is given in square inches. I also need the volume of the prism in cu in. For example length=3, w=2, h=5 Answered by Penny Nom.
	The surface area of a cube and rectangular prism		2009-02-16
		From Mhiko: how to derived the total surface area of a cube and rectangular prism using geoboard?? Answered by Robert Dawson.
	Solid figures		2009-02-10
		From Rebecca: I need to know the names of solid figures. I have several pictures that I need to answer what type they are. Thanks, Rebecca 3rd grade Answered by Penny Nom.
	A triangular pyramid		2009-02-06
		From kamran: what would be an example of a triangular pyramid Answered by Stephen La Rocque.
	Faces, edges and vertices		2009-02-04
		From sheila: what is the relationship between the number of faces and the number of edges of a triangular pyramid ? Answered by Penny Nom.
	The volume of a prism		2009-01-19
		From Mady: What is the general equation used to find the volume of a triangular prism? Answered by Robert Dawson and Harley Weston.
	A rectangular prism		2009-01-13
		From nika: How many bases does a rectangular prism have? What are they? Answered by Harley Weston.
	Triangular prisms and pyramids		2009-01-10
		From KJ: What are some items found in a home or school that could be considered a triangular prism or triangular pyramid? Answered by Robert Dawson and Penny Nom.
	A belt drives a pulley		2008-11-03
		From Rebecca: A point on a belt is moving at the rate of 30 ft/sec and the belt drives a pulley at the rate of 200 rpm. What is the radius of the pulley? Answered by Penny Nom.
	Linear and Angular Velocity		2008-10-10
		From Matthew: The pedal and gear relationship of a bicycle is shown. The radii of the gears are r(sub1) = 5 cm and r(sub2)= 12 cm. The radius of the wheel is r(sub3) = 30 cm. How many rotations per minute of the pedal gear will produce a racing cyclist's speed of 60 km per hr. For a diagram: http://bikepedalsgears.weebly.com/ Answered by Stephen La Rocque.
	Angular & Linear Speed from a Sine Graph		2008-08-19
		From Kim: Kim, a student: I am given a graph with a wave. The amplitude is 5cm and the period is 4cm. I am suppose to find the angular speed. What I need to know is the formula for angular speed and how do I use these numbers to get the correct answer. Answered by Janice Cotcher.
	A triangular field		2008-08-15
		From joneka: Barb walked five times aroun a triangle field all together she walked 435 feet the first side of the triangle fiel is 23 feet the length of the other two sides are of the same measure. What are the dimensions of the triangle field? Answered by Penny Nom.
	A rectangular room		2008-06-30
		From Peter: A rectangular room has a perimeter of 42 feet and an area of 108 square feet. What is the length, in feet, of the shorter side? Answered by Penny Nom.
	Escort cards on a rectangular table		2008-06-13
		From Susan: What size rectangular table will we need to put 230- 2" X 3.5" escort cards on for my daughter's wedding reception with a spacing of .5 inch between them on all sides? Thanks so much for your help Answered by Penny Nom.
	The current in a river		2008-06-12
		From Joi: To approximate the speed of the current of a river, a circular paddle wheel with radius 4 feet is lowered into the water. If the current causes the wheel to rotate at a speed of 10 revolutions per minute, what is the speed of the current? Express your answer in miles per hour. Answered by Harley Weston.
	An octagonal prism		2008-04-27
		From Melanie: My son is identifying geometric shapes in the real world? We are stuck on octagonal prism, rectangular prism and square prism. Can you help me out with some examples. Thanks Answered by Penny Nom.
	A solid figure with 3 rectangular faces and 2 triangular faces		2008-04-17
		From Emily: I am in the 3rd grade and my teacher gave us a question. What is a solid figure with 3 rectangular faces and 2 triangular faces? Answered by Penny Nom.
	A rectangular prism		2008-03-31
		From Chanlie: i need need to find a rectangular prism with a total surface area of 210 units. Answered by Penny Nom.
	Triangular prisms and pyramids		2008-03-03
		From LORENA: hi i am in yr 6 and i need to know how many faces,vertices and edges these shapes have.. . TRIANGULAR PYRAMID . TRIANGULAR PRISM Answered by Penny Nom.
	A square and an equilateral triangle		2008-02-10
		From Emily: A square pen and a pen shaped like an equilateral triangle have equal perimeters. Find the length of the sides of each pen if the sides of the triangular pen are fifteen less than twice a side of the square pen. Answered by Stephen La Rocque.
	Radians		2008-02-08
		From Brian: I'm teaching Precalculus right now and will be covering the formula to convert angular speed into linear speed. My question is about the units involved. Using v=rw, if r is mearsured in feet and w is measured in radians/second then v is measured in ft/sec. What happened to the units of radians? I can't find a good way to explain why they are not part of units for velocity. Do you have a good explanation? Thanks, Answered by Stephen La Rocque.
	The surface area of the rectangular solid		2007-12-30
		From Sara: For my math homework i found the volume of a rectangular solid whose deminsions were in feet and the numbers were 10 by 20 by 30 10 = hight 20 = short side base 30 = long side base and now i have to find the surface area of the rectangular solid.... i know how to do this but i can't get the right answer it should be 2,200 ft squared but i keep getting 13,00 feet squared Answered by Penny Nom.
	A rectangular prism		2007-11-16
		From nicholas: What is the height the surface area to a rectangular prism with a volume of 350 milliliters? Answered by Stephen La Rocque.
	Radial motion		2007-11-13
		From abdulai: a circular saw with diameter 18.4cm rotates at 2400rpm. What is the angular speed of a point on the edge of the saw blade in radians per second? Answered by Penny Nom.
	A triangular lot		2007-10-17
		From Brian: Seeking the square footage of a triangular property lot, dimensions are: 620 X 620X 720. Answered by Penny Nom and Melanie Tyrer.
	Angular speed		2007-08-05
		From Virginia: the engine of a sports car rotates at 5,000 revolutions per minute (rpm). calculate the angular speed of the engine in radians per second. use 2n radians = 1 revolution Answered by Stephen La Rocque.
	A triangular trough		2007-07-19
		From janine: A trough is formed by nailing together, edge to edge, two boards 11 ft. in length, so that the right section is a right triangle. If a 15 gallon of water are poured into the trough and if the trough is held level so that a right section of water is an isosceles right triangle, how deep is the water? (231cu.in=1 gal.) Answered by Penny Nom.
	The area of a triangular pyramid		2007-07-18
		From Jhezelle: What is the formula of finding the surface area of a triangular pyramid? Answered by Penny Nom.
	The number of blocks on the face of a pyramid		2007-06-27
		From Heather: I was wondering if there was an equation in order to calculate the number of blocks on the face of a pyramid. For example: X X X X X X Is there a specific formula in order to calculate that there are 6 blocks here? Thank You, Heather Answered by Harley Weston.
	What angle does the tire turn in 60s?		2007-06-04
		From San: An automobile, travelling at 80km/h, is towing a trailer. The wheels of the trailer are 40cm in diameter. Through what angle does the tire turn in 60second? Answered by Stephen La Rocque.
	The volume of a triangular prism		2007-06-01
		From Hannah: How do I find the area of the base of a triangular prism, so that I can find the volume by using the equation on the attachment. The formula is that volume equals one half times (base times height) times triangle height. Thank you for your help. Hannah Answered by Penny Nom.
	Angular velocity		2007-05-01
		From Bruce: a tachometer of a Ford Explorer reads 2,100 rpm at 60 mph. Find the equivalent angular velocity in degrees per minute and radians per minute Answered by Stephen La Rocque.
	A beam on a lighthouse		2007-03-28
		From Lisa: A beam on a lighthouse 2000 metres away from the nearest point P on a straight shoreline revolves at the rate of 10 pi radians per minute. How fast is the beam of the light moving along the shoreline when it is 500 metres from P? Answered by Stephen La Rocque.
	A triangular prism		2007-03-26
		From Tom: Hi, I need to find a container in the shape of a triangular prism that will fit four table tennis balls (this is for a math project!). These balls have a diameter of 4cm, so a radius of 2. I know that the formula for finding an incircle from a triangle is: radius of incircle = 2area of triangle / perimeter of triangle But I need to know the length of one side of the triangle from the incircle (the triangle needs to be equalateral). Can you help me find a formula for this? Thanks so much! Tom Answered by Penny Nom.
	Surface area of a triangular prism		2007-02-21
		From Katrina: What is the formula to finding the surface area of a triangular prism? Answered by Gabriel Potter.
	a specific 3-d shape		2007-02-12
		From Robby: What three dimensional shape has 6 vertices, 5 faces, and two congruent triangular bases? I can't find the answer to this question anywhere. Your help will be appreciated. Thanks, Robby Craig Answered by Pam Fowler, Gabe Potter and Walter Whiteley.
	Water in a triangular trough		2007-01-30
		From Trina: the trough is 5 feet long and its vertical cross sections are inverted isosceles triangles with base 2 feet and height 3 feet. water is draining out of the trough at a rate of 2 cubic feet per minute. at any time t, let h be the depth and v be the volume of water in the trough. a. find the volume of water in the trough when it is full b. what is the rate of change in h at the instant when the trough is .25 full by volume? c. what is the rate of change in the area of the surface of the water at the instant when the trough is .25 full by volume? Answered by Penny Nom.
	Angular speed		2007-01-18
		From Cristina: A car is moving at a rate of 50 miles per hour, and the diameter of its wheels is 2.5 feet. a) Find the number of revolutions per minute the wheels are rotating. b) Find the angular speed of the wheels in radians per minute. Answered by Stephen La Rocque.
	Angular speed		2007-01-06
		From Robert: A rear wheel and tire on a John Deere 8520 farm tractor has a 39-in. radius. Find the angle (in radians) through which a wheel rotates in 12 sec if the tractor is traveling at a speed of 22 mph. Answered by Penny Nom.
	1, 3, 6, 10...		2006-12-15
		From Lisa: What is the nth term for the sequence, '1, 3, 6, 10...' and could you say how you got the anwser. Answered by Stephen La Rocque and Penny Nom.
	Pulleys and belts		2006-10-31
		From Lynn: A belt has a linear speed of 32 mph. It is spinning three pulleys. Pulley A has diameter 14 in. radius = 7 inches Pulley B has diameter 26 in. radius = 13 inches Pulley C has radius 3 ft. radius = 36 inches Angular speed in Radians per min for I got Pulley A= .08 rads/min Pulley B= .04 rads/min Pulley C=.01 rads/min How many cm would pulley C travel in 14 seconds? Answered by Penny Nom.
	The surface area of a triangular prism?		2006-10-29
		From Amanda: What is the formula for the surface area of a triangular prism? Answered by Haley Ess.
	Angular speed		2006-10-04
		From Jack: A horse on a merry-go-round is 7m from the center and travels at a speed of 10km/h. What is its angular speed? Answered by Stephen La Rocque.
	A rectangular tank		2006-09-19
		From Milton: What size rectangular tank will I need to hold 841.5 gallons of water. The water level is 3'-0" from the bottom of tank. Answered by Penny Nom.
	The volume of a triangular box		2006-09-12
		From Irene: How do I find the volume of a triangular box? Answered by Penny Nom.
	Angular velocity		2006-03-28
		From Ben: How do you (a) express angular speed in terms of linear speed and (b) express linear speed in terms of angular speed? Answered by Stephen La Rocque.
	The volume & surface area of a rectangular pyramid.		2006-02-27
		From Cheryl: My daughter is working on a math project & we are having a hard time finding the volume & surface area of a rectangular pyramid. Can you help us with this? Answered by Penny Nom.
	A triangle of 50p pieces		2006-02-22
		From Stuart: Ok, so i am collecting 50p pieces and arranging them on my desk in the shape of a triangle. eg 50p 50p 50p 50p 50p 50p 50p 50p 50p 50p I want to work out how much money I'm saving just by knowing how many rows of coins there are. If i can work out how many coins there are just by knowing how many rows I have I can just divide by 2 to find out the amount in dollars. Answered by Penny Nom.
	Shapes		2005-11-12
		From Tonya and Hailey: MY THIRD GRADERS TEACHER HAS SENT HOME HOMEWORK ASKING FOR THEM TO FIND REAL-WORLD OBJECT IN MANY DIFFERENTS SHAPES A FEW HAVE US STUMPED Answered by Penny Nom.
	A triangular pyramid		2005-10-22
		From Stacee: When stacking oranges to form a triangular pyramid, each orange touching 3 oranges below it. In order to have a pyramid with 6 layers, how many oranges should be on the bottom layer? Answered by Penny Nom.
	A triangular lot		2005-05-21
		From Linda: I am looking to purchase a piece of property, and I need some help trying to figure out the square footage of the land. I know that normally if I multiply the length and width I could get my answer. However, this piece of land is an odd shape and has 3 measurements. Can you please help me. The measurements for this piece of land is: 97.8' 201.2' 139.7' Answered by Penny Nom.
	What is the name of a 3D rectangle?		2004-06-07
		From Jack: if a cube is a 3D square, what is the name of a 3D rectangle? Answered by Penny Nom.
	Angular speed		2004-02-01
		From Rachel: A 4 inch pulley on a motor makes 1500 revolutions/minute. It is connected to an 8 inch saw blade. a. Find the angular speed of the pulley in radians/minute b. Find the angular speed of the saw in radians/ minute Answered by Harley Weston.
	A rectangular prism		2003-01-09
		From Julie: How many faces on a rectangular prism and how many bases? Can the base also be a face and can a face also be a base? Answered by Diane Hanson.
	A triangular prism		2002-10-30
		From Daniel: I was wondering what a triangular prism was. Answered by Diane Hanson.
	A triangular prism		2002-04-28
		From A student: Need the formula for the surface area of a triangular prisim? Answered by Penny Nom.
	Triangular numbers		2002-04-26
		From Anika: Can you please tell me what a triangular number is? Answered by Penny Nom.
	A triangular pyramid		2001-05-14
		From Kumar: In a Pyramid OABC, all the three sides of the base: a, b, c are known. Also known are the angles between the three sides from the vertex O: Angles AOB, BOC, COA. With this information, is it possible to calculate the lengths of the three sides: OA, OB & OC. Answered by Chris Fisher.
	Prisms		2001-04-10
		From A fourth grade class: A fourth grade class is curious about the names that have been given to various solid geometric figures based on their shapes: are there names for solids based on a rhombus, a trapezoid, a parallelogram, a decagon, and/or a quadralateral? Answered by Chris Fisher.
	Volume and surface area of a cylinder and a triangular prism		2001-03-31
		From Kevin: I was wondering how do you find the volume and surface area of a cylinder and a triangular prism. Answered by Penny Nom.
	PreCalculus		2000-08-09
		From Angela: Use absolute values to define the interval or pair of intervals on the real line. <--|--- |--- ]--- |--- |--- |--- [---| ---|--> 18 19 20 21 22 23 24 25 26 A car is moving at the rate of 50 miles per hour, and the diameter of its wheels is 2.5 feet. a) Find the number of revolutions per minute that the wheels are rotating. b) Find the angular speed of the wheels in radians per minute. Answered by Harley Weston.
	Angular velocity		2000-05-24
		From Ashley Milliman: The crankshaft of a particular automobile engine has an angular velocity of 1,500 rpm at 30 mph. The crankshaft pulley has a diameter of 10 cm, and it's attached to an air conditioner compressor pulley with a 7 cm diameter and an alternator pulley with a 5 cm diamter At what angular velocities do the compressor and alternator turn? . . . Answered by Harley Weston.
	Triangular numbers and square numbers		2000-03-02
		From Emily McCallum: Would someone find me some math activities using triangular numbers and square number. Especially acitivities that actually form the shapes. They need to be at the 5th grade or 6th grade level. But you can not find anything that can be tauht at these level, that fine. I just need to be able to teach this new subject or kind of math to my kids. Answered by Rick Seaman and Penny Nom.
	Pyramids and prisms		2000-01-18
		From Tyler: What's the definition of a Triangular Prism and a Triangular pyramid. Answered by Penny Nom.
	Three dimensional rectangle		2000-01-11
		From Dennis Murphy: I would like to find out the name of a Three dimensional rectangle. Answered by Harley Weston.
	Rectangular hyperbola		1999-12-15
		From Aarti Chand: Why do they call a rectangular hyperbola, rectangular and where the normal hyperbola looks like a rectangle and the rectangular hyperbola looks like a sqaure? Answered by Chris Fisher.
	Cannonballs		1999-01-27
		From Roger King: How many cannonballs can be stacked in a triangular pyramid? Answered by Penny Nom.
	Triangular Numbers		1998-10-30
		From Matt: i would like to know about triangular numbers and it history i would also like to know about the history of prime numbers thank you Answered by Chris Fisher.
	Area and Volume		1998-07-28
		From James Pulver: I am going into 12th grade and am practicing for the SAT II. I have come across a problem that I cannot solve. It states that the front, side , and bottom faces of a retangular solid have areas of 24 square centimeters, 8 square centimeters, and 3 square centimeters, respectively. What is the volume of the solid. I need to know how to solve similar problems so is there a formula to go from area to volume? Answered by Jack LeSage.
	Triangular Numbers.		1997-09-08
		From Rachel: Show visually that the square number 16 is the sum of two triangular numbers. Which two? Answered by Penny Nom.

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