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# Rotation: Calculate Distance and Speed

The distance covered is calculated as twice the radius times the number of revolutions times the number π.

Example: if a body with radius 1 makes one revolution in one second, then it has a speed of 22.62 km/h, makes 60 revolutions per minute and covers 6.28 meters in that second.

Physics commonly uses SI units. Here is a calculator to convert units.

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