The surface area for a rectangular prism with a square base is SA=2s2+4sh. What is the surface area if s=3 and h=5?

Question

Araceli Baird

Mathematics

1 May, 17:45

The surface area for a rectangular prism with a square base is SA=2s2+4sh. What is the surface area if s=3 and h=5?

+5

Answers (2)

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Maddox Skinner · Answer 1

Given that SA=2s² + 4sh

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Plug in s=3 and h=5:

SA = 2 (3) ² + 4 (3) (5) = 18 + 60 = 78 units²

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Answer: SA = 78 units²

Samir Berry · Answer 2

so you subtitute and get SA=2 (2) 2+4 (2) (4) and get SA=8+32=40

actually the surface area is 2 (s^2) + 4sh and if you subitute you get the same thing