Sector Area Calculator
Math CalculatorsCalculate the area of a circle sector (pizza slice).
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Sector Area
About This Tool
Find the area of a portion of a circle. Enter the radius and the central angle in degrees to find the area of the sector.
Frequently Asked Questions
A sector is the portion of a circle enclosed by two radii and an arc. It looks like a slice of pizza or pie.
The formula is $(\text{Angle} / 360) \times \pi r^2$. It is essentially the fraction of the total circle's area.
If the angle $\theta$ is in radians, the formula simplifies to $A = \frac{1}{2} r^2 \theta$.
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