Question

What is the surface area of the outside of a closed-top water tank whose edge length is 7.2 ft?

Answer 1

The surface area of a cube is just the area of all six sides of the cube. Therefore, if we let s = the cube's side,

The surface area would be 6⋅s2 because the area of one face is s2 and there are six faces

Given this, we know from the problem that s=5

We can just plug in for s.

SA = 6⋅52

SA = 6⋅25

SA = 150

Answer 2

311.04 hope it help this is a certifyed answer cuz k12 said it was correc