Circumference

Circumference

The length of the outside edge of certain geometric figures.

Formulas

The calculate the circumference C of a circle as a function of its diameter d, we can use the equation : \({C} = πd\).

To calculate the circumference C of a circle as a function of its radius r, we can use the equation : \({C} = 2πr\).

cercle

Historical note

The term “circumference” is derived from the Latin word circumferre. This term was first used by Euclid in his work The Elements.

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