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Estimating Square Root

Find the sum ...

Question

Find the sum of the square root of 81 and the square root of 64.

A

17

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B

18

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C

16

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D

15

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Solution

The correct option is A 17
$\sqrt{81} = 9$
$\sqrt{64} = 8$
So, sum of the sqaure root of 81 and square root of 64 = 9 + 8 = 17.

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