






1 
60 













2 
7 













3 
10 













4 
30 













5 
9 













6 
11 













7 
80 













8 
5 













9 
90 













10 
12 







radius 
diameter 
circumference 
area 


11 
100 













12 
70 













13 
3 













14 
8 













15 
40 













16 
50 













17 
20 













18 
1 













19 
6 













20 
4 













21 
2 




































































































































































































































































































































































































































































































































































©Ms. Garcia Math 




















Name: 

ID: 

Quiz: 

Grade: 





















Find diameter given circumference [d = C/π ] 
π (Pi) = 

? 






Diameter: the longest distance from one point of a circle to the other. 





Circumference: is the distance around the circle. 





π (pronounced Pi) is the ratio of the circumference of a circle to the diameter 





Complete this table (round the answer to the nearest tenth) 







Radius (cm) 
Diameter (cm) 
Circumference (cm) 





1) 











2) 











3) 











4) 






Divide the circumference by Pi to find the diameter of a circle. 





5) 











6) 


























