Practice Test Discussion

$If \sqrt{80656} = 284, then \sqrt{8.0656} =?$

[United India Insurance Co (AAO), 2002]

28.4

2.84

0.0284

0.284

None of these

Explanation

$\begin{array}{l} Here, \sqrt{80656} = 284 \\ \Rightarrow \sqrt{8.0656} = \sqrt{\frac{80656}{10000}} = \frac{284}{100} = 2 .84 \end{array}$

Hence, Option B is correct.

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