In a circle of radius 21cm, an arc subtends an angle of 60° at the centre. Find (i)the length of the arc (ii)area of the sector formed by the arc

Question

In a circle of radius 21cm, an arc subtends an angle of 60&#xB0; at the centre. Find (i)the length of the arc (ii)area of the sector formed by the arc

Philoid · Accepted Answer

Given,

Radius of circle = 21cm

Angle subtend by arc = 60°

Length of the arc =

Area of sector formed by arc =