Question

Find the missing side length, and enter your answer in the box below. If necessary, round your answer to 2 decimal places.

Answer 1

c = 15

Explanation:

Using Pythagoras' identity on the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

c² = 9² + 12² = 81 + 144 = 225 ( take the square root of both sides )

c =
`√(225)` = 15

Answer 2

15

Explanation:

9^2+12^2=c^2 use pythagorean thereom

225=c^2 use radical to solve

c=15