Question

The length, width, and height of a cube are changed to 3 times their original size. By what factor does the surface area of the cube increase?

Answer 1

`9`

Explanation:

Each side of the cube is initially `1xx1`.
After the change, each side is `3xx3`.
`1xx1 = 1`
`3xx3 = 9`
The area of each side of the cube has increased by a factor of 9, so the entire surface area must also have increased by a factor of 9.