Question

How to find square root ?​

Answer 1

Square root formula you need to find and use the square root formula to fond the square root

Answer 2

To estimate a square root, find the two perfect squares the number is closest to, then continue with further decimals, i.e. if the question is square root of 5, it is between 4 and 9.  As such, the answer is between 2 and 3.  Alternatively, use a calculator for a quick estimation of many decimal points.