Question

Three cube-shaped boxes are stacked one above the other. The volumes of two of the boxes are 1,331 cubic meters each, and the volume of the third box is 729 cubic meters. What is the height of the stacked boxes in meters?

A.
19
B.
29
C.
30
D.
31

Answer 1

31

Explanation:

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Answer 2

D. 31

Explanation:

The edge dimension of a cube is the cube root of the volume. For the two boxes that are 1331 m³, the height is ...

∛(1331 m³) = 11 m

For the box that is 729 m³, the height is ...

∛(729 m³) = 9 m

Then the total height of the stack of boxes is ...

11 m + 11 m + 9 m = 31 m