SQRT( )
Calculates the square root of a number.
Syntax
SQRT(num)
Argument
num
The number, or numeric expression that specifies the number, for which you want to find the square root. The number must be a positive number.
Returns
A number that is the square root of num.
Example
The following example calculates the square root of each value in the LotSize data field:
SQRT([LotSize])
The following example uses SQRT( ) to calculate the actual distance travelled uphill, given the base distance and elevation values. This example applies the Pythagorean theorem, which states that . Using this theorem, the actual distance traveled is c, which means we want to calculate:
which translates to the following expression:
SQRT((([Distance] * [Distance]) + ([Elevation] * [Elevation])))

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