

1. 
Change 120° to radian measure in terms of . 


A. 

B. 
 


C. 
 
D. 



Hint 


2. 
Change radians to degree measure. 


A. 
145° 
B. 
145° 


C. 
135° 
D. 
135° 


Hint 


3. 
Given a central angle of 105°, find the length of its intercepted arc in a circle of radius 6 centimeters. Round to the nearest tenth. 


A. 
5.2 cm 
B. 
11.0 cm 


C. 
10.4 cm 
D. 
22.0 cm 


Hint 


4. 
The diameter of a circle is 18 inches. If a central angle measures 64°, find the length of the intercepted arc. 


A. 
about 10.1 in. 
B. 
about 18.2 in. 


C. 
about 20.1 in. 
D. 
about 14.6 in. 


Hint 


5. 
A sector has an area of 14.5 square meters. The radius of the circle is 4 meters. Find the radian measure of the central angle to the nearest tenth. 


A. 
14.6 radians 
B. 
1.8 radians 


C. 
7.3 radians 
D. 
3.6 radians 


Hint 

