Intro to Circles
What is the diameter?
8mm
mm
What is the radius?
20cm
cm
What is the radius?
10.8mi
mi
What is the diameter?
7.4m
m
What is the diameter?
23in
in

Circumference =  π times diameter, π=3.14 

 

C =
5cm
cm
Circumference = πd, π=3.14 
C =
1.2ft
ft
What is the diameter?
Radius = 3 in
in
What is the radius?
diameter = 45ft
ft
What is the diameter?
radius is 32.1mm
mm
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