Circles to Radians conversion
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Circle is a simple shape in Euclidean geometry that consists of all points in a plane that are located at a fixed distance, called radius, from a given point, called center.
Radian is the standard unit of angular measure that defines the ratio between the length of arc and its radius. Radian is a former SI supplementary unit, but since 1995 when this category was abolished it is considered a SI derived unit.