Sqr( num )
Returns the square root of a number.
The parameter num must be a valid number greater than or equal to zero.
Example:
Sub Form_Click()
Dim Msg, Number ' Declare variables.
Msg = "Enter a non-negative number."
Number = InputBox(Msg) ' Get user input.
If Number < 0 Then
Msg = "Cannot determine the square root of a negative number."
Else
Msg = "The square root of " & Number & " is "
Msg = Msg & Sqr(Number) & "."
End If
MsgBox Msg ' Display results.
End Sub