Question

The legs of a right angle measure 9 feet and 12 feet. What is the length of the hypotenuse?

Answer 1

A^2 + B^2 = C^2
81 + 144 = C^2
C = 225^(0.5)
C= 15

Answer 2

Call x is the length of hypotenuse. We have:$9^{2} + 12^{2} = x^2 =\ \textgreater \ x^2= 81 + 144 = 225 =\ \textgreater \ x= \sqrt{225}= 15$