In triangle JKL, the length of side JK is 12 feet, and the length of side KL is 15 feet. What is the length of side JL?

Length of side JL = 9ft

Step-by-step explanation:

Triangle JKL is a right angle triangle where side kl = hypotenuse = 15ft

And side jk = opposite = 12 ft

We are looking for side JL = adjacent

According to Pythagoras theorem

A² = B² + C²

15² = 12² + C²

225 = 144 + C²

225-144 = C²

81 = C²

9 = C

Length of side JL = 9ft