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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