Question

The area of each triangular face of this right triangular prism is 8cm^2(squared).

Answer 1

Nothing is shown.
The triangle is a right triangle, 9, 12 & 15.
The triangle's area = b*h/2 = 9*12/2 = 54 sq meters each end.

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The 3 rectangles are 10 by 9, 12 & 15
Area of the 3 = 10*(9 + 12 + 15) = 360 sq meters
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Total area = 360 + 2*54
= 468 sq meters