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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 June 2014, 1:23 PM
Answered by Expert
Answer:

Radius = 21 cm

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

(i) l =

(ii)

= 231 cm2

Answered by Expert 4th June 2014, 3:23 PM
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