Question

Find the length of an arc of a circle
which subtends an angle of 108° at the
centre, if the radius of the circle is 15
cm.
​

Answer 1

Answer:

28.27 cm

Explanation:

We know that

angle (in radius)= arc/ radius

Convert given angle in rradians

108°=180π/180= 3π/5

Therefore, 3π/5= arc/15

Arc= 9πcm

Arc=28.27 cm

Hence, required length of the arc is 28.27 cm.