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Find the smallest number by which 147 must be multiplied so that it becomes a perfect square. Also, find the square root of the number so obtained.

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Find the smallest number by which 147 must be multiplied so that it becomes a perfect square. Also, find the square root of the number so obtained.

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147 = 72 × 3 

To make the unpaired 3 into paired, multiply the number with 3 

Therefore, 147 × 3 = 72 × 32 

Hence, square root of number = √147 × √3 = 7 × 3 

= 21

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