Exemplos
Área — Worked Examples
3 real worked examples for the Área calculator. See how we solve common scenarios with full step-by-step math.
1
Bedroom flooring
Cenário
A 12 ft × 14 ft bedroom.
Entradas
- Length
- 14 ft
- Width
- 12 ft
Passos do cálculo
- A = length × width
- A = 14 × 12 = 168 ft²
- Add 10% for waste: 168 × 1.10 = 184.8 ft²
Resultado
Buy at least 185 ft² of flooring (includes 10% waste allowance for cuts and mistakes).
2
Circular patio
Cenário
A circular patio with a 10-foot radius.
Entradas
- Radius
- 10 ft
Passos do cálculo
- A = π × r²
- A = 3.14159 × 10²
- A = 3.14159 × 100
- A ≈ 314 ft²
Resultado
Patio area: 314 ft². Add 10% waste: 345 ft² of pavers needed.
3
Triangular garden plot
Cenário
A triangular garden with base 20 ft and height 12 ft.
Entradas
- Base
- 20 ft
- Height
- 12 ft
Passos do cálculo
- A = ½ × base × height
- A = ½ × 20 × 12
- A = 120 ft²
Resultado
Garden area: 120 ft². Soil needed (6 inches deep): 120 × 0.5 = 60 cubic feet ≈ 2.2 cubic yards.