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30 November, 09:35

the length of each edge of a cube is X centimeter if x is an integer why can't the volume of the cube equal 15 cm squared

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  1. 30 November, 12:10
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    Because cubes feature only certain values:

    1^3 = 3

    2^3 = 8

    3^3 = 27

    There is no x, x an integer, for which x^3 is = 15 cm^3.

    Note well: the units of volume in this case are cm^3, not cm^2.
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