Question

What is the surface area of this right triangular prism?

Answer 1

• 1200 in²

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Find the perimeter of the triangular base and multiply it by the height.

• S = Ph

• S = (17 + 17 + 30)*15
• S = 64*15
• S = 960 in²

Find the area of triangular bases:

• B = (1/2)*8*30 = 120 in²

Add up the two bases to the lateral area to get the total surface area:

• A = 960 + 2*120
• A = 1200 in²

Total surface area is 1200 in².