

1. 
The diameter of a child's circular wading pool is feet. What is the circumference of the pool? Use . 


A. 
feet 
B. 
feet 


C. 
3 feet 
D. 
feet 


Hint 


2. 
Find the circumference of a cookie with a diameter of in. Use . 


A. 
in. 
B. 
in. 


C. 
in. 
D. 
in. 


Hint 


3. 
Find the circumference of the circle. Use 3.14 for . 





A. 
25.12 mi 
B. 
50.27 mi 


C. 
12.56 mi 
D. 
7.14 mi 


Hint 


4. 
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. 
97.39 mm 
D. 
194.78 mm 


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. 
154 inches 
B. 
17 inches 


C. 
22 inches 
D. 
44 inches 


Hint 


