Circumference

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Circumference of a circle

Template:EnWiktionary In geometry, circumference is the distance around a closed curve; for example, a circle. It is a special kind of perimeter.(c=PI x diameter)

[math]\displaystyle{ c = \pi * diameter }[/math]

Other websites

• Numericana - Circumference of an ellipse
• Circumference of a circle With interactive applet and animation

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