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Question

Find the square root of the following decimal numbers:

42.25



A

6.3

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B

6.5

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C

4.5

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D

7.8

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Solution

The correct option is B

6.5


We use long division method to find the square root of 42.25. For that, we will group 2 numbers from right to left and then proceed with the division.

6.56¯¯¯¯¯¯42 ¯¯¯¯¯¯25361256256250

Hence, the square root of 42.25 is 6.5.


Mathematics

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