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?

SA = 2s^2 + 4sh
SA = 2(2^2) + 4(2)(4)
SA = 2(4) + 8(4)
SA = 8 + 32
SA = 40
answer is 40