Excel SQRT Function

Use:
Computes square root of a single cell or numeric formula
Syntax:
SQRT( cell )
Examples:
Cell E3 formula:     SQRT( D3 )

Alternative E3 formula:     SQRT( B3 + C3 )
Cell B7 formula:     SQRT( SUM( B3:B6 ) )

Notes:
The square root of a negative number cannot be computed. This is why #NUM! is displayed in cell E5.

 

SQRT( cell ) is equivalent to ( cell ) ^ (0.5)