Answer:
15 ft
Explanation:
Use Pythagorean Thm. If I have two sides:
Then I do this to find the third:
If looking for leg, do sqrt(big square - small square)
If looking for hyp, do sqrt(leg square+leg square)
So what this means since x is a leg, I'm going to do sqrt(17^2-8^2)
17 was bigger than 8 that's why it went first
Anyways now we can just whip out the calculator
sqrt(17^2-8^2)=15