### Home > CCG > Chapter 10 > Lesson 10.2.2 > Problem 10-83

10-83.

Remember that the radian measure of a central angle of a circle is the ratio of the arc length to the radius (see problem 10-55). is blue.

What is the radian measure for a

-degree central angle on a circle with radius cm? What is the radian measure for a -degree central angle on a circle with radius cm? Answer in terms of .Both answers in part a should be the same.

The central angle of a circle has a radian measure of

. What is the measure of the central angle of the sector in degrees?