

1. 
Find the area of a circle with a radius of 10 millimeters. Round to the nearest tenth. 


A. 
314.1 mm^{2} 
B. 
3,142.0 mm^{2} 


C. 
314.2 mm^{2} 
D. 
31.4 mm^{2} 


Hint 


2. 
Find the area of the semicircle below. Round to the nearest tenth. 





A. 
381.0 m^{2} 
B. 
380.1 m^{2} 


C. 
191.0 m^{2} 
D. 
190.1 m^{2} 


Hint 


3. 
A dog is tied to a leash in the middle of a yard. The leash allows him to play in a circular area that is 804 square feet. How long is the leash? Round to the nearest foot. 


A. 
14 ft 
B. 
16 ft 


C. 
15 ft 
D. 
255 ft 


Hint 


4. 
Find the area of the circle below. Round to the nearest tenth. 





A. 
3.1 km^{2} 
B. 
0.7 km^{2} 


C. 
1.6 km^{2} 
D. 
0.8 km^{2} 


Hint 


5. 
The pitching mound on a baseball field has a circular area of 254.47 square feet. Find its diameter. Round to the nearest foot. 


A. 
20 ft 
B. 
27ft 


C. 
18 ft 
D. 
9 ft 


Hint 


