Question

In a circle of radius 2 centimetres, what is the length of an arc of central angle 300°?

Answer 1

Radius (r) of the circle = 2 cm

Perimeter of the circle = 2πr

= (2 × 3.141 × 2) cm

= 12.564 cm

Central angle made by the given arc is 300°, which is of 360°.

∴ Length of the arc = of the perimeter of the circle

=

_{= 10.47 cm}