Circumference of a circle
2πr
The circumference of a circle is defined as the total distance around the outer boundary of the circle. It is represented by the Greek letter π, which is approximately equal to 3.14159. The formula to find the circumference of a circle is:
Circumference = 2 x π x radius
Where radius is the distance from the center of the circle to its outer edge. Alternatively, the diameter of a circle can also be used to find its circumference, using the following formula:
Circumference = π x diameter
Where diameter is the distance across the widest part of the circle, passing through its center point.
In order to find the circumference of a circle, we need to know the value of π and either the radius or the diameter of the circle. Once we have these values, we can simply plug them into the appropriate formula to calculate the circumference of the circle.
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