Question

14. The length of an arc, which subtends an angle
of 30° at the centre of the circle of radius 42 cm
is
(a) 22 cm
(b) 44 cm
22
(d)
7.
(c) 11 cm
cm​

Answer 1

Step-by-step explanation:

length of an arc= (angle substend /360)*2πr

=(30/360)*2*3.14*42

=(1/12)*263.76

=21.98cm

or 22cm approx

so (a) is correct answer