geometry
posted by ginA .
In a right triangle, one side is 9 units in length, and the hypotenuse is 15 units in length. What is the length of the other side?

a^2 + b^2 = c^2
9^2 + b^2 = 15^2
81 + b^2 = 225
b^2 = 225  81
b^2 = 144
b = ?