Circle formulas

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Article : Circle formulas - Author, Translator ru - en
Calculator : Circle formulae - Author, Translator ru - en

Created: 2011-06-24 20:46:34, Last updated: 2021-03-20 20:18:07

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Some circle formulas with simple calculator

Circumference $L=2 \pi R$
Area of a circle $S=\pi R^2$
Area of a sector $S=\frac{\alpha R^2}{2}$ , where alpha - sector angle in radians

Circle formulae
Radius
Sector (degrees)
Calculation precision
Digits after the decimal point: 2
Area of the circle

Area of the sector

Circumference