What is a Sector?

A sector is the area of a circle between two radii. There are two types of sectors, namely, the minor sector and the major sector.

Minor sector: A smaller part occupied by two radii is called the minor sector.

A larger part occupied by two radii is called the major sector. A major sector has a central angle which is more than 180°. 

$\frac{angle \ at \ centre}{360*}=\frac{area \ of \ sector}{\pi r^2}$

$area \ of \ sector= \frac{angle \ at \ centre}{360*}\times \pi r^2$

Area of Major sector = Area of the circle $-$ Area of the minor sector

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Updated on: 10-Oct-2022

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