UDF using SQRT function

I am trying to create a UDF using SQRT but its not working out for me sure i'm missing something simple...just a noob

I have tried using the ^ symbol but no luck
I have hight in there because I plan to expand the function later

Function LocationRegion(Width As Integer, Hight As Integer)
    If IsNumeric(Width) And IsNumeric(Hight) Then
        LocationRegion = Width * (0.5 - SQRT(2) / 4)
End If
End Function