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unit of measure: the base unit | the supplementary unit | the derived unit

*geometry: the area of a flat figure | the area of a solid | the volume of the solid*

A ** segment of a circle, disc ** is the part of a circle, disc that is bounded by its arc and chord.

The ** area of a segment of a circle, disc ** is the difference between the area of AOB sector and the area of the equiteral triangle AOB, expressed by an angle.

where:

r — the radius of a circle, disc;

α — the angle formed by radiuses, in radians.

*For separation of number integers and decimals, use the symbol – point [.]*

context information: contemporary and archaic unit of measurement of area