Question

The surface area for a rectangular prism with a square base is SA = 2s2 + 4sh.

What is the surface area if s = 2 and h = 4?

Answer 1

SA = 40 sq units.
SA = 2(2^2) +4(2)(4)
SA= 8 + 32
SA = 40

Answer 2

(2)(2)(2) + (4)(2)(4)
8 + 32
40