Answer:
2 376 ft²
Explanation:
the surface of the triangular prism =
= 2 × (area of the base) + (lateral area)
= 2 × [(24×9)÷2] + (24+15+15)×40
= 2 376
2376 square feet
40 x 15 = 600
40 x 24 = 960
1/2 x (24 x 9) = 108
600 + 600 + 960 + 108 + 108 = 2376
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