SOLUTION: What is the measure of the central angle of a circle with radius 30 centimeters that intercepts an 18pi centimeters arc

Algebra ->  Trigonometry-basics -> SOLUTION: What is the measure of the central angle of a circle with radius 30 centimeters that intercepts an 18pi centimeters arc       Log On


   

Question 1104986: What is the measure of the central angle of a circle with radius 30 centimeters that intercepts an 18pi centimeters arc
Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.
R%2Aalpha = length of the arc = 18%2Api,   or


30%2Aalpha = 18%2Api  ====>  alpha = %2818%2Api%29%2F30 = 3pi%2F5 = 108 degrees.