Missing lengths of a 45^°-45^°-90^° Special Right Triangle given Leg length = 4.5√2

Leg lengths of a 45^°-45^°-90^° Special Right Triangle are equal
Hypotenuse length = Leg length * √2
Hypotenuse length = 4.5√2 * √2
Hypotenuse length = 4.5 * 2
Hypotenuse length = 9