Final answer:
The surface area of the rectangular prism is 128 square feet when s = 4 feet and h = 6 feet.
Step-by-step explanation:
The surface area of a rectangular prism with a square base is given by the expression 2s(22) + 4sh, where s is the side length of the square base and h is the height of the prism. To find the surface area when s = 4 feet and h = 6 feet, substitute these values into the expression:
Surface Area = 2s(22) + 4sh
Surface Area = 2(4)(22) + 4(4)(6)
Surface Area = 2(4)(4) + 4(4)(6)
Surface Area = 32 + 96 = 128
Therefore, the surface area of the rectangular prism is 128 square feet.