The square root of 0.0081 will be

0.009

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0.09

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0.0009

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0.9

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Solution

The correct option is C 0.09
We know that the square root of 81 is 9
So, $\sqrt{0.0081} = \sqrt{\frac{81}{10000}}$ $= \frac{9}{100}$
$\Rightarrow \sqrt{0.0081} = 0.09$

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