The answer is 9in.
Step-by-step explanation:
To solve this problem, you must use the Pythagorean Theorem.
Since we already have the Hypotenuse (), which is 15in, we must solve the following:
+ =
Now, we find that = 225, so we subtract that from , which is 114.
Then, that leaves us with 81, and the sqaure root of 81 is 9, which is your answer.