56 items are filed under this topic.
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A triangular garden |
2020-05-24 |
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From yoonji:
the 3 sides of a triangular garden measure 200 ft., 250 ft., and 300 ft., respectively. the garden is to be divided by a line bisecting the longest side and drawn from the opposite vertex. what is the length of the bisecting line?
Answered by Penny Nom. |
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A trough with a triangular cross section |
2016-05-21 |
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From Clarice:
A trough having an equilateral triangle end sections has sides equal to 0.4 m and 7m long.what is the volume of the liquid in the container if the depth of the water is one half the depth of the trough?
Answered by Penny Nom. |
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Sloping my yard away from my house |
2016-04-15 |
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From Harold:
I need to slope a area of my yard away from my house and garage. The length of my house is 80 feet long and i need to slope it 22 feet away. I want to raise the dirt at the foundation by 6 inches and slope it down to nothing at the width of 22 feet. How much soil would i require?
Answered by Penny Nom. |
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A triangular shaped garden |
2016-01-13 |
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From Demetrie:
Dwayne's garden is triangle-shaped with two equal sides and a third side that is 4 ft more than the length of an equal side. If the perimeter is 49 ft, how long is the longest side?
Answered by Penny Nom. |
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The perimeter of a triangular plot of land |
2016-01-11 |
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From Janelle:
I need to fence off 6.5 acres. The plot is triangular shape. How many feet would I be fencing off?
Answered by Penny Nom. |
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The surface area of a triangular prism |
2015-06-03 |
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From Alex:
Find the surface area of a triangular prism with Isoceles triangles and dimensions 4 feet by 6 feet
Answered by Penny Nom. |
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A tennis ball in a triangular prism |
2014-10-06 |
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From Anna:
Hi, I need to find the the base and the height of a triangular prism, but I only know the diameter of a tennis ball that fits exactly in the triangular container.. The diameter for the ball is 8.50cm.
Can you help me find the formula?
Thank you!
Answered by Penny Nom. |
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A barge of triangular cross section |
2014-08-18 |
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From tushar:
a barge of triangular cross section is 20m long 12 m wide and 6m deep.its floats in SW at a draft if 4m find its displacement
Answered by Penny Nom. |
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A gravel pile in the shape of a triangular pyramid |
2013-04-04 |
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From Casey:
Hello
Right now I am stuck and I feel embarrassed because I feel like the answer is so easy I should know it.
I am working on a project and need to find a volume of gravel it will take to occupy this triangular prism like area. I am not sure what formulas I should use whether it be that for the volume of a pyramid or something more complex? Basically it forms a right triangle at one side then from there all points slope to one singular point about 10412mm away.
I am attaching a picture drawn up in paint with the actual dimensions to clear up any confusion.
Thank you for any help.
Casey
Answered by Penny Nom. |
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Question |
2013-04-04 |
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From Casey:
Hello
Right now I am stuck and I feel embarrassed because I feel like the answer is so easy I should know it.
I am working on a project and need to find a volume of gravel it will take to occupy this triangular prism like area. I am not sure what formulas I should use whether it be that for the volume of a pyramid or something more complex? Basically it forms a right triangle at one side then from there all points slope to one singular point about 10412mm away.
I am attaching a picture drawn up in paint with the actual dimensions to clear up any confusion.
Thank you for any help.
Casey
Answered by Penny Nom. |
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A railroad embankment |
2013-01-22 |
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From clint:
the pennsylvania railroad found it necessary,owing to land slides upon the roadbed,to reduce the angle of inclination of one bank of certain railway cut near pittsburgh,pa.,from an original angle of 45 degrees to a new angle of 30 degrees. the bank as it originally stood was 200 ft.long and had a slant length of 60 ft.. find the amount of the earth removed, if the top level of the bank remained unchanged.
Answered by Penny Nom. |
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The volume of a wedge |
2012-05-28 |
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From olwethu:
volume of wedge that have side 3,3 cm and 6,2 cm and 20 cm long?
Answered by Penny Nom. |
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Triangular numbers that are square |
2011-12-27 |
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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. |
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The volume of a triangular shaped aquarium |
2011-05-07 |
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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. |
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The volume of a triangular pyramid |
2011-04-15 |
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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. |
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Pyramids and parallelograms |
2010-04-01 |
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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. |
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A champagne pyramid |
2010-03-22 |
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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. |
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A triangular prism |
2010-01-13 |
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From Breon:
what is the formula for a triangular prism?
Answered by Robert Dawson. |
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A triangular pyramid |
2010-01-05 |
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From ally:
how many vertices, edges, faces in a triangular pyramid?
Answered by Robert Dawson. |
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A triangular shaped ditch |
2009-11-12 |
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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. |
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Triangular Numbers |
2009-06-16 |
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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. |
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A triangular pyramid |
2009-02-26 |
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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. |
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Solid figures |
2009-02-10 |
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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. |
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A triangular pyramid |
2009-02-06 |
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From kamran:
what would be an example of a triangular pyramid
Answered by Stephen La Rocque. |
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Faces, edges and vertices |
2009-02-04 |
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From sheila:
what is the relationship between the number of faces and the number of edges of a triangular pyramid ?
Answered by Penny Nom. |
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The volume of a prism |
2009-01-19 |
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From Mady:
What is the general equation used to find the volume of a triangular prism?
Answered by Robert Dawson and Harley Weston. |
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Triangular prisms and pyramids |
2009-01-10 |
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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. |
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A triangular field |
2008-08-15 |
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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. |
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Triangular prisms and pyramids |
2008-03-03 |
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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. |
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A square and an equilateral triangle |
2008-02-10 |
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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. |
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A triangular lot |
2007-10-17 |
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From Brian:
Seeking the square footage of a triangular property lot, dimensions are: 620 X 620X 720.
Answered by Penny Nom and Melanie Tyrer. |
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A triangular trough |
2007-07-19 |
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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. |
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The area of a triangular pyramid |
2007-07-18 |
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From Jhezelle:
What is the formula of finding the surface area of a triangular pyramid?
Answered by Penny Nom. |
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The number of blocks on the face of a pyramid |
2007-06-27 |
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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. |
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The volume of a triangular prism |
2007-06-01 |
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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. |
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A triangular prism |
2007-03-26 |
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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. |
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Surface area of a triangular prism |
2007-02-21 |
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From Katrina:
What is the formula to finding the surface area of a triangular prism?
Answered by Gabriel Potter. |
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a specific 3-d shape |
2007-02-12 |
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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. |
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Water in a triangular trough |
2007-01-30 |
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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. |
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1, 3, 6, 10... |
2006-12-15 |
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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. |
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The surface area of a triangular prism? |
2006-10-29 |
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From Amanda:
What is the formula for the surface area of a triangular prism?
Answered by Haley Ess. |
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The volume of a triangular box |
2006-09-12 |
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From Irene:
How do I find the volume of a triangular box?
Answered by Penny Nom. |
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A triangle of 50p pieces |
2006-02-22 |
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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. |
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Shapes |
2005-11-12 |
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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. |
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A triangular pyramid |
2005-10-22 |
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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. |
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A triangular lot |
2005-05-21 |
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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. |
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A triangular prism |
2002-10-30 |
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From Daniel:
I was wondering what a triangular prism was.
Answered by Diane Hanson. |
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A triangular prism |
2002-04-28 |
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From A student:
Need the formula for the surface area of a triangular prisim?
Answered by Penny Nom. |
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Triangular numbers |
2002-04-26 |
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From Anika:
Can you please tell me what a triangular number is?
Answered by Penny Nom. |
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A triangular pyramid |
2001-05-14 |
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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. |
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Volume and surface area of a cylinder and a triangular prism |
2001-03-31 |
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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. |
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Triangular numbers and square numbers |
2000-03-02 |
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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. |
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Pyramids and prisms |
2000-01-18 |
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From Tyler:
What's the definition of a Triangular Prism and a Triangular pyramid.
Answered by Penny Nom. |
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Cannonballs |
1999-01-27 |
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From Roger King:
How many cannonballs can be stacked in a triangular pyramid?
Answered by Penny Nom. |
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Triangular Numbers |
1998-10-30 |
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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. |
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Triangular Numbers. |
1997-09-08 |
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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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