What happens to the volume of a cube if the length of an edge is doubled?

Doubled: Volume increased 8 times

Tripled: Volume increased 27 times

Quadrupled: Volume increased 64 times

Pretty simple ... if you're doubling the lengths, you're increasing them by 2 times. Take 2 and raise it to the 3rd power. If you're tripling the lengths, you're increasing them 3 times over. Take 3 and raise it to the 3rd power. And so on.

Doubled = 2^3 = 8

Tripled = 3^3 = 27

Quadrupled = 4^3 = 64

Does that make sense?