The volume of cube A is 64 cubic feet. What is the volume of cube B if it's side lengths are half the length of cube A's sides?

4 feet.

Step-by-step explanation:

The formula of a cube's volume is V = l*w*h

All 3 in a cube's case are equal

So the volume is V = s*s*s.

In other words all of the sides must be equal

The size of s = cube root of (V)

s = cube root (64)

s = 4.

You might want to check to see if that is correct

4 * 4 * 4

16 * 4

64

Looks like the answer is 4