Question

What is the square root for 40.5?

Answer 1

`(9sqrt(2))/2`

Explanation:

`40.5 = 81/2`

`sqrt(40.5)=sqrt(81/2)=9/sqrt(2)`

Rationalise the denominator by multiplying numerator and denominator by `sqrt(2)`

`9/sqrt(2) = (9sqrt2)/2`