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

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

Radius = 21 cm

The arc subtends an angle of 60o at the centre.

(i) l =

(ii)

= 231 cm2

Answered by  | 4th Jun, 2014, 03:23: PM