Calculadora de Área do Retângulo

How to use it

1. {'step': 1, 'description': 'Calculate area: 8.75 × 4.25 = 37.1875 m²'}
2. {'step': 2, 'description': 'Calculate perimeter: 2 × (8.75 + 4.25) = 26 m'}
3. {'step': 3, 'description': 'Calculate diagonal: √(8.75² + 4.25²) = √94.8125 = 9.7372 m'}
4. {'step': 4, 'description': 'Results: 37.19 m² area, 26 m perimeter, 9.74 m diagonal'}

Common mistakes

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

Worked example

Calculate area and perimeter of a retangular room measuring 8.75m by 4.25m for flooring estimation

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

Input guide