Question

Line segment KL is tangent to circle J at point K

What is the length of the radius, r?
8 units
10 units
12 units
16 units

Answer 1

10 units

Explanation:

Answer 2

Explanation:

KL is tangent to the circle, so angle JKL = 90°.

Pythagorean Theorem:

r² + 24² = (r+16)²

r² + 576 = r² + 32r + 256

32r = 320

r = 10 units