Measurement

Circumference

The length of the outside edge of a circle or a sphere.

Formulas

The calculate the circumference C of a circle as a function of its diameter d, we can use the equation : [latex]{C} = πd[/latex]. To calculate the circumference C of a circle as a function of its radius r, we can use the equation : [latex]{C} = 2πr[/latex]. 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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