Answer:

Explanation:
The wording is a bit confusing, but i beleive it basically means that we're trying to find the length on a leg of a triangle with a leg length of 3 and a hypotenuse of 5.2
if we write this out as an equation, it gives us:

If we then simplify this, we get 27.04 - 9, which then simplifies to 18.04.
We then need to get the square root of this number to get the answer, thus the answer is
