Circle Calculator

Calculate area, circumference, radius, and diameter from any known value

Entradas

Digite qualquer valor para calcular o resto:

Raio

Diâmetro

Circunferência

Área

cm²

calculator.interactive

Digite valores para ver resultados

Circumference: C = 2πr = πd

Area: A = πr²

Diameter: d = 2r

Note: Calculations are provided as-is for educational and planning purposes. For critical applications, always verify results independently.

Calculate rectangular areas

Solve any triangle

Common shape areas

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