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prism

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Prisms 2017-09-01
From Christa:
What do all prisms have in common?
Answered by Penny Nom.
Sloping my yard away from my house 2016-04-15
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.
The volume of a box with a hexagonal base 2016-03-27
From Frank:
how many gallons of water in an 8" hexagon shaped box. 6" sides x 12.5" high ? The walls are 1" thick , beveled @ 30 degrees, so inside dimensions are 6"
Answered by Penny Nom.
A rectangular prism 2016-03-02
From Paula:
Trying to help with a math problem. I don't know how to set up the equation for this.

A rectangular prism has a volume of 7.875m3rd and a height of 3.5 m. What is the area of the base of the prism?

Thanks for your help!

Answered by Penny Nom.
The surface area of a triangular prism 2015-06-03
From Alex:
Find the surface area of a triangular prism with Isoceles triangles and dimensions 4 feet by 6 feet
Answered by Penny Nom.
The volume of a trench 2015-03-11
From Kim:
A trench 60m long and 15m deep, 12m wide at the top and 8m wide at the bottom.How many cubic meters of earth have been removed?
Answered by Penny Nom.
A tennis ball in a triangular prism 2014-10-06
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.
A barge of triangular cross section 2014-08-18
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.
The volume of hexagonal pyramid and hexagonal prism 2014-05-18
From visshwam:
how to find volume of hexagonal pyramid and hexagonal prism? my measurements are each side of pyramid's triangle is 1"x2"x2".

hexagon prism is 2"x1" each side

Answered by Penny Nom.
Two rectangular prisms 2014-04-10
From hannah:
two rectangular prisms have a combined volume of 432 cubic feet Prism A has half the volume prism b has what are the volumes of prism a and prism
Answered by Penny Nom.
The surface area of a rectangular prism 2014-04-08
From Manraj:
Find the surface area of a rectangular prism with dimensions 4, 5, and 7 units.
Answered by Penny Nom.
Can a cylinder be considered a circular prism? 2014-02-08
From Davina:
Can a cylinder be considered a circular prism?
Answered by Penny Nom.
A railroad embankment 2013-01-22
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.
Cones, pyramids, cylinders and prisms 2012-09-13
From Roy:
I read on this page that a pyramid is a special kind of cone, but a cone is not a pyramid. Does this apply to cylinders. Is a prism a special kind of cylinder, but a cylinder is not a prism?
Answered by Robert Dawson.
The volume of a wedge 2012-05-28
From olwethu:
volume of wedge that have side 3,3 cm and 6,2 cm and 20 cm long?
Answered by Penny Nom.
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.
A trapezoidal prism filled with sand 2012-03-12
From Maria:
could a Trapezoid that is 80 inches high with a 54 inch width top and a 89 inch width bottom and a 80 inch depth hold 58 cubic yards of sand?
Answered by Robert Dawson.
The volume of a dugout 2012-01-28
From Jan:
is there a formula for calculating the cubic yardage removed from a dugout for example that is forty feet wide by one hundred and twenty feet long by twelve feet deep with a three to one slope? It is the slope that makes it a little tricky. Thank you.
Answered by Penny Nom.
The volume of a hexagonal prism 2011-09-19
From Denise:
I am being asked to find the volume of a hexagonal prism, base edges are 3cm, and a height of 15cm. The book that I am working from says that the answer is 77.94cm(cubed) but no matter what the equation I use I always get the answer 116.9/117. Please help! Thank you!
Answered by Penny Nom.
The volume of a decagonal prism 2011-05-29
From Susan:
How do you find the volume of a decagonal prism?
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.
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.
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.
A prism and a pyramid 2010-02-19
From Juanita:
What is the relationship between the volume of a prism and a pyramid with congruent base areas and heights?
Answered by Tyler Wood.
A triangular prism 2010-01-13
From Breon:
what is the formula for a triangular prism?
Answered by Robert Dawson.
Truncated Octagonal Prism 2009-12-26
From freitas:
the top plane of the truncated octagonal right prism is 45 degree with respect to horizontal. find the volume
Answered by Janice Cotcher.
Draw a net for a rectangular prism? 2009-05-29
From Mohamad:
Draw a net for a rectangular prism?

Last week when we were studying for our finals we came across a section about drawing nets I would really appreciate it if you gave me some help on it

Answered by Robert Dawson.
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.
How many rectangles are in a square prism? 2009-04-09
From Lorenya:
How many rectangles are in a square prism?
Answered by Robert Dawson.
Square prisms and pyramids 2009-04-03
From Sheyna:
What are the differences between a square prism and a pyramid?
- Sheyna

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.
The amount of concrete in a football stand 2009-01-30
From jacques:
A football stand 150 yd long has 20 tiers of seats; each tier has a rise of 2ft and tread of 3ft.Its construction of reinforced concrete with a cross section as shown. Find the amount of the material used in its construction.
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.
Volume of a Shed 2008-07-24
From lou:
I need to know the interior volume in cubic feet of a shed with the dimensions 8' x 10' x 7' with a roof peak of 9'. Thanks
Answered by Janice Cotcher.
A right prism with a square base 2008-06-13
From Malik:
Question from Malik: A company wants to alter the dimension of container. The new container is in the shape of right prism equivalent to the current one. The current container has height of 12cm and square base. The new container has also square base, but in the dimension base is increased by 3cm and height is decreased by 5cm. if the cardboard is used to manufacture the new container, what area of cardboard is used to make new container?
Answered by Penny Nom.
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.
The volume of a truncated prism 2008-03-03
From jhey:
The volume of a truncated prism is 6240 cu cm. The base is a right section in the form of an equilateral triangle. The edges perpendicular to the base are 15 cm, 18 cm, and 15 cm long. Find the length of one side of the base.
Answered by Harley Weston.
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.
The volume of a regular octagonal prism 2007-10-20
From Chris:
I am trying to figure out the volume of a regular octagonal prism, with side lengths of 4 inches. How do I do this?
Answered by Penny Nom.
A truncated prism 2007-09-24
From Simon:
What is the name of a triangular prism with the top of the top of the prism cut off called please. It is therefore flat on top and flat on the bottom with prism sides. Thanks.
Answered by Harley Weston.
The surface area of a prism 2007-08-21
From Iliyas:
State the area of prism with logical proof?
Answered by Penny Nom.
Prisms and pyramids 2007-08-02
From taryn:
two similarities between prism and pyramid
Answered by Penny Nom.
A right rectangular prism 2007-06-10
From Wendy:
if a right rectangular prism volume is 36cubic cm how can i find the base and height.
Answered by Penny Nom.
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.
Pre-algebra volume of a prism 2007-05-10
From Brenda:
Find the volume of a triangular prism with a base of 5 cm by 5 cm and a height of 12.5 cm. Round to the nearest tenth.
Answered by Stephen La Rocque.
How many faces on a prism? 2007-05-10
From Samad:
How many faces does a rectangular prism have?
Answered by Penny Nom.
Names of solid figures 2007-03-28
From Debbie:
What is the name of the solid figure: 1) base with 5 equal sides and faces that are 5 triangles 2) all 6 faces are squares and 3) 2 congruent pentagons for bases and 5 rectangular faces. Please help! Thanks
Answered by Penny Nom.
The volume of a trough 2007-03-27
From Tracy:
I need help trying to find the volume of a 9 ft long trough that has two equilateral triangles on the end. When the water of the trough is 2 feet deep and its depth keeps increasing by 1/2 ft/minute. I have to figure out at what rate the water is flowing into the trough.
Can you point me in the right direction for finding the equation for the volume of the trough?

Answered by Penny Nom.
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.
How many hours will it take to fill completely? 2007-03-19
From Leslie:
If a rectangular prism measures 8" and measures 12" by 16", what is it's volume? If after 8 hours the prism is 6" full, how long will it take to fill and how many hours will it take to fill completely?
Answered by Stephen La Rocque.
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.
The surface area of a hexagonal prism 2007-02-19
From Cari:
How do you find the surface area of a hexagonal prism? Thank you.
Answered by Penny Nom.
The volume of a prism 2007-02-14
From jasmine:
What is the formula to find the volume of a triangular prism
Answered by Penny Nom.
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.
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.
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.
Surface areas 2005-05-11
From Jessica:
How can I demonstrate to my high school students the reason for the formulas for the surface area of a prism, right cylinder, and regular pyramid, and right cone?
Answered by Penny Nom.
Volume and surface area of a prism 2005-04-29
From Melissa:
Can you please tell me if the volume and surface area of a prism can ever be the same? Could you please explain why or why not.
Answered by Walter Whiteley.
Is a cylinder a type of prism? 2004-01-29
From Rebecca:
Is a cylinder a type of prism?
Answered by Penny Nom.
8 faces, 12 vertices, and 18 edges 2003-04-22
From Thomas:
I would like to know the proper name for this geometrical solid. It has 8 faces, 12 vertices, and 18 edges?
Answered by Penny Nom.
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.
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.
Triakis 2001-02-17
From Anne Grant:
I am a grade 8 teacher and have come across the term "Triakis" used with Tetrahedron, octahedron, and hexahedron. What does this term refer to, and what's the difference between a triakis polyhedron and one that is not?

I'd also like to know what is meant by the term antiprism, as opposed to prism.


Answered by Penny Nom.
A prism 2001-01-18
From Nigel Ayling:
What is the mathematical definition of a prism, I am confused by the following definitions as they appear to be contradicto...
Answered by Walter Whiteley.
Pyramids and prisms 2000-01-18
From Tyler:
What's the definition of a Triangular Prism and a Triangular pyramid.
Answered by Penny Nom.
Un volume d'une capacité minimal 2009-01-05
From Pauline:
je doit faire un volume d'une capacité minimal de 2500 cm 3 en quell matiere que ce soit
* un prisme a base pentagonale non réguliere
* une sphere
* stella octangula

Answered by Pierre-Louis Gagnon.
l'armature d'un prisme 2008-03-01
From dufetre:
a l'aide d'une tige de 63cm on desire construire l'armature d'un prisme dont la base est un triangle equilateral et dont la hauteur mesure 3cm de plus que la la longueur du cote du triangle. Soit x la longueur du cote du triangle.exprimer en fonction de x la hauteur de ce prisme exprimer en fonction de x la longueur totale des aretes Quelle sera la longueur du cote du triangle. merci
Answered by Maxime Fortier Bourque et Thierry Moisan.
 
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