Q25 of 157 Page 846

In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. The length of the arc is

Radius of Circle = R = 21 cm


Angle Subtended by the arc = 60°


Length of an arc of a sector of angle of a circle with radius R =


Length of arc = 2 × 22/7 × 21 × 60/360 cm = 22 cm

More from this chapter

All 157 →
23

The length of the minute hand of a clock is 21 cm. The area swept by the minute hand in 10 minutes is

 24

A chord of a circle of radius 10 cm subtends a right angle at the centre. The area of the minor segments (given, π = 3.14) is

 26

In a circle of radius 14 cm, an arc subtends an angle of 120° at the centre. If √3 = 1.73 then the area of the segment of the circle is

 1

In the given figure, a square OABC has been inscribed in the quadrant OPBQ. If OA = 20 cm then the area of the shaded region is [take π = 3.14]