If the hypotenuse of a right triangle has length 9 feet and one of the other sides has length 2 feet, what is the length of the remaining side, in feet?

A square+ B square= C square
C is the hypotenuse so 9 squared = 81
A can be 2 squared=4
4+B squared=81
-4                    -4
                        77 and 77 squared is apprx.8.8