Calculate the area of any 2D shape: circle, rectangle, triangle, trapezoid, rhombus, ellipse, sector, parallelogram, and more.
| Property | Value |
|---|
| Shape | Formula |
|---|---|
| Circle | A = πr² |
| Rectangle | A = l × w |
| Triangle | A = ½ × b × h |
| Trapezoid | A = ½(a+b) × h |
| Rhombus | A = ½ × d₁ × d₂ |
| Ellipse | A = π × a × b |
| Regular polygon | A = (ns²)/(4×tan(π/n)) |
| Sector | A = ½r²θ (θ in radians) |