How to find square root of 256??
Kindly refer the similar link for your query.
https://www.meritnation.com/ask-answer/question/how-to-find-square-root-of-a-number/exponents-and-powers/1640303
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https://www.meritnation.com/ask-answer/question/how-to-find-square-root-of-a-number/exponents-and-powers/1640303
Regards