If the volume of a cube is 729 cc, then the length of its side is:

19 cm

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13 cm

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18 cm

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9 cm

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Solution

The correct option is D 9 cm
We know, The volume of the cube = $a^{3}$
$a^{3} = 729 \Rightarrow a = \sqrt[3]{729}$
$∴ a = 9 c m$

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