

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 the circle. Use for . 





A. 
132 mm 
B. 
126 mm 


C. 
66 mm 
D. 
21 mm 


Hint 


3. 
Find the circumference of a circle whose radius is 1.25 yards. Use the key on a calculator. Round to the nearest tenth. 


A. 
3.9 yd 
B. 
7.9 yd 


C. 
6.4 yd 
D. 
4.8 yd 


Hint 


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





A. 
12.56 mi 
B. 
7.14 mi 


C. 
50.27 mi 
D. 
25.12 mi 


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. 
22 inches 
B. 
44 inches 


C. 
154 inches 
D. 
17 inches 


Hint 


