Formula of Circumference of a circle: 3.14*Diameter of the circle.
You could also do:
3.14*3.14*radius.
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The formula for the circumference of a circle is the same, whatever its diameter. Circumference = pi*diameter.
use the formula pi*diameter = circumference and the formula diameter = 2*radius and combine them 2pi*radius = circumference now you have a formula that you can just plug you numbers into. if you have 3 as your radius, then this is how to find the circumference 2pi*3=circumference 6.28*3=circumference 18.84=circumference
circumference = pi multiplied by the diameter
to find the circumference of a circle you do 2 times3.14timesthe radius
Circumference is the distance around the object and Area is the amount of space it takes up.