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# Circular sector

Calculates area, arc length, perimeter and center of mass of circular sector

Sector is the portion of a disk enclosed by two radii and an arc.

### Circular sector

Angle in degrees

Digits after the decimal point: 2
Arc length

Perimeter

Center of mass

Area

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Sector area:
$A= \frac {R^2\alpha}{2}$
Arc length:
$L = {\alpha}{R}$
Perimeter:
$P = ({\alpha+2}){R}$
Center of Mass:
$M = \frac{4R}{3\pi}$