Planos

Calculadora de área

Escolha uma figura, digite as medidas e clique em Calcular.

Resultado

Digite os valores e toque em Calcular para ver o resultado.

Fórmula

Atriangle=12bhA_{\text{triangle}} = \tfrac{1}{2} b h

A triangle is half of a parallelogram with the same base and height.

Atrapezoid=12(a+b)hA_{\text{trapezoid}} = \tfrac{1}{2}(a + b) h

Average the two parallel sides, then multiply by the height.

Como usar esta calculadora

  1. Choose the shape; the inputs change to match it.
  2. Use the perpendicular height, not a slanted side.

Exemplo resolvido

Triangle with base 10 and height 6

A = ½ × 10 × 6 = 30 square units.

Perguntas frequentes

What units is the answer in?

Square units of whatever you entered — e.g. cm in gives cm².

Where is the circle?

Use the Circle Calculator, which also gives exact answers in terms of π.

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