Areas Related to Circles – Notes
Areas of Sector and Segment of Circle
Circumference of a circle of radius r is 2pr
Area of circle is pr2.
Length of the arc of a sector of a angle is 2pr
Area of a sector of angle is pr2
Area of a segment is the area of corresponding sector minus the area of the corresponding triangle.
Areas of combinations of plane figures
A collection of points that are on a plane is known as plane figure.