Question

Two identical number cubes are shown in the picture above. The edge length of these number cubes is 7 centimeters.

What is the combined volume of these number cubes in cubic centimeters?
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Answer 1

686³

Explanation:

To find the answer first take 7 and multiply it by 7 to get 49. That is the area of the base of the cube. Now take 49 and multiply by 7 one more time to get the volume of one cube which is 343³. Now multiply this by 2 to get the volume of two cubes which is 686³ as your answer.