Question

The base of this right prism is a right-angled triangle. What is the surface area of the prism?

Answer 1

Answer:

○ D) 1720 mm.²

Explanation:

$hb(c + b + a)(h) = S. A. \\ \\ (8 \times 15)(17 + 15 + 8)(8) = 120(40)(8) = 38400 \\ \\ 38400 ≈ 1720$

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Answer 2

Answer:

D. 1720 mm^2.

Step-by-step explanation:

This consists of  5 surfaces.

Area of 2 triangles + area of base + area of the side + area of the sloping side.

= 2 * 1/2 * 8 * 15 + 40*17 + 8*40 + 15*40

= 120 + 680 + 320 + 600

= 1720.