Sqr 
ֵƽ

Sqr(number)
number ЧĴڻֵʽ

˵
ʾ Sqr ֵƽ

Dim MySqr
MySqr = Sqr(4)   '  2
MySqr = Sqr(23)   ' 4.79583152331272
MySqr = Sqr(0)   ' 0
MySqr = Sqr(-4)   ' ʵʱ
