If the square root of 10 is 3.16, then find the square root of 40. [2 MARKS]

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Solution

Concept : 1 Mark
Calculation : 1 Mark

Given that,

$\sqrt{10} = 3.16$

$\sqrt{40} = \sqrt{4 \times 10}$

$\sqrt{40} = 2 \sqrt{10}$

$\sqrt{40} = 2 \times 3.16$

$∴ \sqrt{40} = 6.32$

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