Q3 of 31 Page 181

The length of an arc of a circle of radius 7 cm is 12 cm. Find the area of the minor sector.

Given: Radius of the circle = 7 cm and length of an arc = 12 cm


We know that the length of the arc




We know that the area of the minor sector


⇒ Area of the minor sector


⇒ Area of the minor sector = 42cm2


More from this chapter

All 31 →
1

In a circle of radius 7 cm, an arc subtends an angle of 60° at the centre. Find the length of the arc.

 2

A sector of a circle of radius 10.5 cm contains an angle of 45°. Find the area of the minor sector.

4

In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find:

(i) The length of the arc.


(ii) Area of the sector formed by the arc.


(iii) Area of the segment formed by the corresponding chord.

 5

The length of the minute hand of a clock is 10.5 cm. Find area of the sector formed by the minute hand in 10 minutes.