Question

The length of the arc which subtends an angle 60° at

the centre of a circle of radius 3 cm is approximately​

Answer 1

π cm

Explanation:

The formula for arc length (s) as a function of radius (r) and central angle Ф (in radians) is s = rФ.

In this problem r = 3 cm and Ф = 60°, and so the arc length subtended is

s = (3 cm)(π/3) = π cm