Q7 of 30 Page 516

Find the length of an arc of a circle of radius 14 cm which subtends an angle of 360 at the centre

Angle in radians =


θ= where θ is central angle, l=length of arc, r=radius


Therefore angle =


Now,


l = r × θ


=


Therefore the length of the arc is 8.8 cm


More from this chapter

All 30 →
5

The difference between the two acute angles of a right triangle is .

6

Find the radius of a circle in which a central angle of 450 intercepts an arc of length 33 cm. (Take )

 8

If the arcs of the same length in two circles subtend angles 750 and 1200 at the centre, find the ratio of their radii

 9

Find the degree measure of the angle subtended at the centre of a circle of diameter 60 cm by an arc of length 16.5 cm.