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Answered 2012-06-10 21:15:08

It depends on what information you have.

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Assume that a = apothem length of the triangular prism, b = base length of the triangular prism, and h = height of the triangular prism. The formulas to find the surface area is SA = ab + 3bh.


A triangular prism can be thought of as a stack of triangles. Then the volume is equal to the area of the triangular base multiplied by the height of the prism, or 1/2 length * width * height.


triangular prism- formula: Abh(area of the base * height)


Length of prism * perimeter of triangular face.


2*area of triangular base + perimeter of triangle*length of prism.


It depends on the size of the triangular prism, but depending on the side of the prism you use the triangle area formula to find it or the rectangle area formula to find it.


find the area of all the faces then add them all up. this is how you get surface area and there isn't any formula for it


You must be thinking of a triangular prism. In that case, c is the length of the third side of the triangle at the end of the prism.


The formula to find the area of a triangular prism is 1/2 bhl, where b represents the length of the base of the triangle, h is the height of the triangle, and l is the length between the triangles.


Volume = Area of the base X height of prism. This formula works for all prisms, not just triangular prisms. Area of a triangle = height of triangle X 1/2 X base of triangle.


Find the area of a triangular section, 1/2bh, and then multiply by the length of the prism.


The formula is Bxh where B is the base which is the area of the triangle and h is the height of the prism.


The cross sectional area of a triangular prism is simply the area of the base. The formula for the area of a triangle in one half base times height. Remember that a triangular prism by definition has a triangle for a base.


Whatever the net, the answer is the same area as that of the net.


There must be a typo in this question, "Why does the formula for finding the surface area of arectangular prism is helpful?" What does that even mean?


To find the volume of a triangular prism, find the area of one of the triangles (base of the prism) first (base x height divided by 2). When you have the area of the triangle, then multiply the area of the triangle by the height of the prism, *not the height of the base.


Area of triangle * 2 + perimeter of triangle * length.


The exact answer depends on what information is available. It is equivalent to area of triangular base*length.


The first comprises one rectangular face and four triangular faces whereas the second has two triangular and three rectangular faces.



A triangular prism is a three-sided prism with three faces joining corresponding sides. The formula for its surface area is SA = wh + lw + lh + ls, where l=length, h=height, w=width and s=side.


A rectangular pyramid you use 1/3 or divide 3 in the product but a triangular prism you use 1/2 or divide 2 on the product.



When you say surface of a prism this means the total amount of space on the outside of the prism. You have specified it to be a triangular prism, but taking the surface area of all prisms is the same process for all prisms. When finding the surface area of a prism you always use this equation... S.A. = (2 x Area of Prism Base) + (Height x Perimeter of Prism Base) In a triangular prism the base would be a triangle. Therefore to find the area you have to do 0.5 x base of the triangle x height of the triangle. For the perimeter of the triangle just add the length of all the sides together. The height indicated in your S.A. = ... formula... is how tall the prism actually stands. So since this prism is a triangular prism take the general surface area equation and put the correct triangular measurements into the general equation and you have this... S.A. = [2 x 0.5 x (height) x (base)] + [Height x perimeter] Here is the formula in word form. The surface area of a triangular prism is equal to two multiplied by one half multiplied by the height of the traingular height multiplied by the triangular base compute this number and then add it to the product of the height of the prism times the perimeter of the triangular base.


the defnition of find the surface area of triangular prism and cylinder



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