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=5?

Answer 1

To find the surface area of the rectangular prism, we substitute the values of s and h into the formula SA = 2s² + 4sh.

Substituting s = 3 and h = 5 into the formula, we get:
SA = 2(3)² + 4(3)(5)
SA = 2(9) + 4(15)
SA = 18 + 60
SA = 78

Therefore, the surface area of the rectangular prism is 78.