Question

The formula for the surface area of a rectangular prism with a square base is SA = 2s2 + 4sh. What is the surface area of this rectangular prism if s = 3 and h = 6?

Answer 1

SA = 2s^2 + 4sh
       = 2(3^2) + 4(3)(6) 
       = (18) + (72)
SA = 90

hope this helps :)