2. A circle has a radius of 10 centimeters. Find the length, in centimeters, of the arc

Question

intercepted by a central angle of 100 degree.
(A) 50pi/9 (B) 100pi/9 (C) 500pi/9 (D) 18pi/5 (E) None of the above.

Answer 1

C = pi*dia = pi*20 = 20pi cm.

Arc = (100/360) * 20pi = 5.6pi = 50pi/9

Answer 2

(E) none of the above