

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


A. 
 
B. 
 


C. 

D. 



Hint 


2. 
Change radians to degree measure. 


A. 
145° 
B. 
135° 


C. 
135° 
D. 
145° 


Hint 


3. 
Find the area of a sector if the central angle measures radians and the radius of the circle is 22 centimeters. Round to the nearest tenth. 


A. 
506.8 cm^{2} 
B. 
253.4 cm^{2} 


C. 
231.1 cm^{2} 
D. 
1013.7 cm^{2} 


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 14.6 in. 
B. 
about 10.1 in. 


C. 
about 18.2 in. 
D. 
about 20.1 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. 
7.3 radians 


C. 
3.6 radians 
D. 
1.8 radians 


Hint 

