Question

The lengths of the two legs of a right triangle are 18 centimeters and 12 centimeters. What is the exact length of the hypotenuse?

Answer 1

Hypotenuse `=21.63` cm

Explanation:

.

Using the Pythagoras' formula:

`(KL)^2=(KJ)^2+(JL)^2`

`(KL)^2=18^2+12^2=324+144=468`

`KL=sqrt468=21.63` cm