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Answered 2014-08-27 23:34:05

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.

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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.


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


What is the formula for a triangular prism


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.


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.


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?


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.


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


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


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.


Triangular prism = 2 triangles + 3 rectangles.



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


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.


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.


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


Length of prism * perimeter of triangular face.


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


A person can find the volume of a prism by 1/2 x length x width x height. This formula works for a triangular prism.


I am not sure that a rectangular prism is in any position to care!



The answer depends on the formula for what characteristic of the prism.


Simple................ You can't!



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