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Rectangle formulas
3 formulas for Rectangle, 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 = l × b 🧮 Solve step by step | |
| Perimeter | P = 2(l + b) 🧮 Solve step by step | |
| Diagonal | d = √(l² + b²) 🧮 Solve step by step |
What the letters mean
| l | length |
| b | breadth (width) |
Opposite sides equal, all angles 90°.
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Related: Mensuration (2D & 3D)
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