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Sector of a Circle formulas
4 formulas for Sector of a Circle, from the Mensuration (2D & 3D) section of the Quantix formula library. Tap 🧮 next to a formula to solve it for any variable with step-by-step working.
| Name | Formula | Note |
|---|---|---|
| Area | A = (θ/360°) × πr² | |
| Arc length | l = (θ/360°) × 2πr | |
| Perimeter | P = l + 2r 🧮 Solve step by step | |
| Area (radians) | A = ½ r²θ = ½ l r 🧮 Solve step by step |
What the letters mean
| r | radius |
| θ | central angle (degrees) |
A 'slice' of a circle bounded by two radii and an arc.
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Related: Mensuration (2D & 3D)
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