

1. 
Find the circumference of the circle. Use for . 





A. 
66 mm 
B. 
132 mm 


C. 
126 mm 
D. 
21 mm 


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. 
4.8 yd 


C. 
3.9 yd 
D. 
6.4 yd 


Hint 


3. 
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. 
in. 
B. 
in. 


C. 
15 in. 
D. 
33 in. 


Hint 


4. 
Find the circumference of a circle with diameter 4 ft. 


A. 
50.27 ft 
B. 
25.13 ft 


C. 
12.57 ft 
D. 
7.14 ft 


Hint 


5. 
Aisha and McKinley are building a robot. It has wheels that have a radius of 7 inches. They need to know the distance the robot will travel for each revolution of the wheels. How far is this distance? 


A. 
17 inches 
B. 
22 inches 


C. 
44 inches 
D. 
154 inches 


Hint 


