Question

What is the surface area of the outside of a cube shaped closed-top water tank whose edge length is 7.2 ft? A.373.25 B.311.04 C.259.2 D.43.2

Answer 1

We know, Surface area of a Cube = 6a²

Substitute for a = 7.2

Then, SA = 6 * (7.2)²

SA = 6 * 51.84 = 311.04 Ft²

In short, Your Answer would be Option B

Hope this helps!