Find the cube root of $0.729$ .

0.9

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0.09

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0.7

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1.9

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Solution

The correct option is A $0.9$
Expressing $0.729$ as a fraction
$0.729 = \frac{729}{1000}$
$= \frac{9^{3}}{10^{3}}$
Therefore, $\sqrt[3]{0.729} = \sqrt[3]{\frac{9^{3}}{10^{3}}} = \frac{9}{10} = 0.9$

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