Area Calculator
Eight common shapes. Pick one, enter the dimensions.
Result
Area
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Perimeter
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Formula
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The formulas
- Rectangle: length × width
- Triangle: ½ × base × height
- Circle: π × r²
- Trapezoid: ½ × (a + b) × height
- Ellipse: π × a × b
- Sector: ½ × r² × θ (θ in radians)