Multiplying the two same variables will combine them into one variable of an even power. (odd number + odd number = even number) Then the square root (even root/radicand) can be taken eliminating the radicand.
Here's an example to show you what I mean, so you can put it in your own words if you want.
Base×hight×width you are just doing 3/4×3/4×3/4 and what ever your answer is put a little 3 above it so it almost looks like an exponent. Pretend that ABC is the answer it would look like this format = ABCinches3 but the three is tiny