Mathematics Class - 9>Mensuration>Sector of a Circle & Length of Arc>Sector of a Circle

Sector of a Circle

Author:Chhattisgarh Board

9th Chhattisgarh Board

IMPORTANT

Sector of a Circle: Overview

This topic explains the sector of a circle and its two types. A sector is said to be the portion of a disk enclosed by two radii and an arc. The characteristics of a sector have been further discussed in the text.

Important Questions on Sector of a Circle

EASY

IMPORTANT

Mathematics Class - 9>Mensuration>Sector of a Circle & Length of Arc>Sector of a Circle> Q 1

Area of a sector is $1540 sq cm$ , it subtends an angle of $50 °$ at the centre of the circle. Find the radius of the circle.

EASY

IMPORTANT

Mathematics Class - 9>Mensuration>Sector of a Circle & Length of Arc>Sector of a Circle> Q 2

Area of a sector of the circle is $\frac{1}{6}$ times the area of the circle. Find the angle subtended at the centre by the given sector.