Circular Segments
A circular segment is the area of circle enclosed by a chord and the corresponding arc.
Area of a Circular Segment
The area of circular segment AB = area of the circular sector AOB - area of triangle AOB
Examples
A central angle of 60° is plotted on a circle with a 4 cm radius. Calculate the area of the circular segment enclosed by the chord joining the ends of the two radii and its corresponding arc.

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Find the area of the shaded portion of the square ABCD if AB = 10 cm, and APC, AQC are center circle arcs from their centre points B and D respectively.

The shaded portion consists of two circular segments.


Calculate the area of both circular segments if the circular area of the segment = area of the circular sector − area of the triangle.
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