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Mathematics

If $\sqrt{27.8} = 5.27$ ; the value of $\sqrt{2780}$ is:
527
52.7
0.527
none of the above

Sq & Sq Roots

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Answer

If $\sqrt{27.8} = 5.27$ , then

$\sqrt{2780}\\[1em] = \sqrt{27.8 \times 100}\\[1em] = 10\sqrt{27.8}\\[1em] = 10 \times 5.27\\[1em] = 52.7$

Hence, option 2 is the correct option.

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