Question

Anyone else hate geometry

Answer 1

35

Explanation:

since KJ is a tangent to angle HJK is right 90°

then triangle KHJ is right triangle with hypothenus HK = 37

applying pytha

hk ² = kj ² + hj ²

37² = 12² + radius²

radius = sqrt (37² - 12²)

radius = sqrt (1225)

radius = 35