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What is the total surface area of the triangle prism shown

What is the total surface area of the triangle prism shown-example-1

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Answer:

Total surface area = 468 in.²

Explanation:

Total surface area of triangular prism = 2BA + PH

Base area (BA) = ½*bh

b = 9 in.

h = 12 in.

2BA = 2(½*9*12) = 108 in.²

Perimeter of base (P) = 9 + 12 + 15 = 36 in.

Height of prism (H) = 10 in.

Plug in the values

Total Surface area of triangular prism = 108 + 36*10 = 468 in.²

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