Calculateur d'Aire du Rectangle

How to use it

1. {'step': 1, 'description': 'Calculate surface: 8.75 × 4.25 = 37.m²'}
2. {'step': 2, 'description': 'Calculate perimeter: 2 × (8.75 + 4.25) = m'}
3. {'step': 3, 'description': 'Calculate diagonal: √(8.75² + 4.25²) = √94.8125 = 9.m'}
4. {'step': 4, 'description': 'Results: 37.m² surface, m perimeter, 9.m diagonal'}

Common mistakes

• ⚠️ Mixing different units (e.g., meters and centimeters) without conversion
• ⚠️ Using diagonal formule incorrectly by not squaring both sides first
• ⚠️ Forgetting to add waste facteur when ordering materials based on surface

Worked example

Calculate surface and perimeter of a rectangular room measuring 8.75m by 4.25m for flooring estimation

The area_m² ({area_m2}) is the Total surface for materials like flooring; périmètre ({perimetro_m}) helps estimate baseboards; diagonal ({diagonal_m}) verifies square corners.

Input guide