Circumferential length, area, diameter online calculator



App description

The formula for the circle:

Round area \(S= π r^2\)

Circumference length \(C = 2 π r\)

Round diameter \(d = 2 r\)

Usage example

Input data:

Input radius: 2

Unit: m

Click "Calculate" to output data

Circumference length: 12.5664

Round area: 12.5664

Diameter: 4

 

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