Posted by **julissa** on Monday, December 26, 2011 at 4:46pm.

the base of a right triangular prism has a width of 8 inches and a height of 6 inches. the length of the third side of the triangle is 10 inches and the length of the prism is 12 inches. What is the surface area of this prism?

- geometry -
**Reiny**, Monday, December 26, 2011 at 6:55pm
I see a surface area of the prism to be made up of 2 triangles and 3 rectangles

Hypotenuse of triangle is 10 (double the 3,4,5 triangle, it was actually given even though it could have been found)

So area = 2(1/2)(6)(8) + 10(6) + 10(8) + 10(10) = 288 inches^2

- geometry -
**julissa**, Tuesday, December 27, 2011 at 12:50pm
thanx

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