To solve the leg of a right triangles given the two other side, use the pythagorean theorem. which state that C^2 = a^2 + b^2 where C is the hypotenuse of the right triangle a and b are the legs of the right triangle since the unknown is the other leg b^2 = C^2 - a^2 b^2 = 18^2 - 14^2 b^2 = 128 b = 11.3 cm
