Answers

2015-08-20T21:08:43+08:00
Square Root of:
4 = 2
9 =3
16=4
25=5
36=6
49=7
64=8
81=9
100=10
121=11
144=12
169=13

Just memorize, or make sure that it is a perfect square. If not, example. Square root of 20. You have to find a perfect square and multiply it, square root of 4x5. 4 is perfect square so the square root of 20 is 4 square root of 5.
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