Recall that the angle of a full circle is 360 and that the formula for the area of a circle is pr 2. If you know the radius of the circle and the height of the segment you can find the segment area from the formula below. The area of segment of circle can be calculated with the formula.
It can also be found by calculating the area of the whole pie-shaped sector and subtracting the area of the isosceles triangle ACB.
Is a region of a circle which is cut off from the rest of the circle by a secant or a chordMore formally a circular segment is a region of two-dimensional space that is bounded by an arc of less than 180 of a circle and by the chord connecting the endpoints of the arc. Area of Segment of a Circle Formula This is clear from the diagram that each segment is bounded by two radium and arc. First find the area of the minor segment. A ½ r 2 th Sin th Area of a Segment in Degrees.