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?

1 Answer
Mr. Danger
May 31, 2017

#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.

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