SOLUTION: A triangular prism has a length of 18 inches, a width (or base) of 6 inches, a height of 20 inches and a side of 3 inches. What is the surface area of the prism?

Question 976092: A triangular prism has a length of 18 inches, a width (or base) of 6 inches, a height of 20 inches and a side of 3 inches. What is the surface area of the prism?

Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
HI there,
Divide the prism into parts of surface area:
A base = 6 x 18 = 108 ins^2
2 sides = 2(3 x 18) = 108 ins^2
2 triangular ends = 2( 1/2 (6x20))=120 ins^2
Total:
108 + 108 + 120 = 336 ins^2
Hope this helps:-)
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