

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


A. 
feet 
B. 
feet 


C. 
feet 
D. 
feet 


Hint 


2. 
Find the circumference of a circle whose radius is 1.25 yards. Use the key on a calculator. Round to the nearest tenth. 


A. 
7.9 yd 
B. 
3.9 yd 


C. 
6.4 yd 
D. 
4.8 yd 


Hint 


3. 
Laura is painting a round floor cloth to resemble a globe for her bedroom floor. She wants to sew seam binding around the edges to keep the cloth from unraveling. If the radius of the cloth is 3 yards, how much binding should she buy? 


A. 
10 yd 
B. 
19 yd 


C. 
24 yd 
D. 
29 yd 


Hint 


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





A. 
16.5 m 
B. 
33 m 


C. 
8.4 m 
D. 
86.6 m 


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. 
3019.07 mm 
B. 
194.78 mm 


C. 
34.14 mm 
D. 
97.39 mm 


Hint 


