6
sign used for square root.

What are square numbers?
Square numbers are numbers found by multiplying the number by itself.
Example: 1
1,       4,        9,        16,     25,       36,   
49, 64, 81, 100, 121
144 ,      ----,          -------,       ---------,     -------

Example : 2 of square root of fractions.
consider square root of numerator and denominator

5.WORK OUT THE SQUARE ROOT OF THE FOLLOWING .
ANSWERS :