Triangle KJL is inscribed in semicircle O shown below such that JK=6 and JL=11. Which of the following is closest to the radius of the semicircle?

Uhh, answer choices?

In any case, since is inscribed in a semicircle, it is a right triangle (due to the inscribed angle theorem). Thus, by the Pythagorean theorem, Now, the circumradius of a right triangle (the radius of the circle passing through all three of its vertices) is simply half its hypotenuse, so

i got 10.28 but that rounds up to 10.3

sounds & other waves originate from any vibrating object