Question

How can you get the sauare root

Answer 1

Well your answer depends on what the initial number is. 
example: the square root of 100 is 10. the square root of 144 is 12 and so on

Answer 2

Finding the square root of a number is the inverse operation of squaring that number. Remember, the square of a number is that number times itself.

so the square of n=n^2