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# Circle - geometric figure calculator

Thanks to the calculator, you can easily calculate the area of a circle, the circumference of a circle, the area of a circle segment and the length of the circle arc.

Wikipedia

## Circle - Area

$$\Large{S=\pi r^2 \approx 3.14r^2}$$
Radius (r)

Area (S)

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## Circle - Circumference

$$\Large{L=2\pi r \approx 6.28r}$$
Radius (r)

Circumference (L)

## Circle - Field of a circle sector

$$\Large{S=\frac{\alpha}{360}\pi r^2}$$
Radius (r)

Center angle of the sector ($$\alpha$$)

Area (S)

## Circle - Length of the arc of a circle

$$\Large{L=\frac{\alpha \pi r}{180}}$$
Radius (r)

Center angle of the sector ($$\alpha$$)

Length of the arc of a circle