SQRT
          Returns the square root of a value.
         
         Syntax
SQRT(Value)
Value is a number or a formula that returns a number. If Value is negative, the result is undefined.
Example
This example returns 3:
SQRT(9)
SQRT(Value)
Value is a number or a formula that returns a number. If Value is negative, the result is undefined.
This example returns 3:
SQRT(9)