Question

The volume of a rectangular prism with a square base is fixed at 120 cubic feet. Write the surface area of the prism as a function A(x) of the length of the side of the square x.

Answer 1

Explanation:

120=x²×h=x×xh

xh=120/x

surface area A(x)=2x²+4x×h=2x²+4xh=2x²+4×120/x=2x²+480/x