

1. 
Find the circumference of a circle with diameter . Use . 


A. 

B. 



C. 

D. 



Hint 


2. 
Sara's mother, Shenequa, is making Sara a cake for her birthday. She wants to put a border of blue icing around the cake. How long does it need to be if the cake has a radius of in.? Use . 





A. 
15 in. 
B. 
33 in. 


C. 
in. 
D. 
in. 


Hint 


3. 
Find the circumference of the circle. Use for . 





A. 
16.5 m 
B. 
86.6 m 


C. 
8.4 m 
D. 
33 m 


Hint 


4. 
Find the circumference of the circle. Use 3.14 for . 





A. 
12.56 mi 
B. 
7.14 mi 


C. 
25.12 mi 
D. 
50.27 mi 


Hint 


5. 
Find the circumference of a circle whose radius is 31 mm. Use the key on a calculator and round your answer to the nearest hundredth. 


A. 
34.14 mm 
B. 
3019.07 mm 


C. 
194.78 mm 
D. 
97.39 mm 


Hint 


