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MensurationAreas Related to Circles
Circle Area & Circumference
Change the radius and compare area with circumference growth.
Controls
7 cm
Live result
Circumference 2πr
43.982cm
Area πr²
153.938cm²
Circle — radius, circumference, areaCircumference 2πr: 43.982 cm
area vs radius
Doubling the radius doubles the circumference but makes the area four times larger.