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17 September, 20:19

Is 729 a perfect cube? What is the number whose cube is 729?

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  1. 17 September, 20:21
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    729 is a perfect cube. The number whose cube is 729 is 9.

    Explanation:

    Let us find the cubes of natural numbers from starting

    1 x 1 x 1 = 1

    2 x 2 x 2 = 8

    3 x 3 x 3 = 27

    4 x 4 x 4 = 64

    5 x 5 x 5 = 125

    6 x 6 x 6 = 216

    7 x 7 x 7 = 343

    8 x 8 x 8 = 512

    9 x 9 x 9 = 729

    10 x 10 x 10 = 1000

    So we got that 729 is the cube of 9, so 729 is a perfect cube.

    The number whose cube is 729 is 9.
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