What happens if the answer of a squared + b squared in the Pythagorean theorem is not a perfect square? How do you solve the problem and find out C squared if the hypotenuse cannot have a radical?

Let's say there is a right triangle with sides 6 and 7.

We compute the 3rd side (the hypotenuse) by

hypotenuse² = 6² + 7²

hypotenuse² = 36 + 49

hypotenuse² = 85

85 is NOT a perfect square so on a calculator, use the square root function to find the square root of 85 which equals

9.2195444573