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CBSE Class 10 Answered

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 | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Radius = 21 cm

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

(i) l =

(ii)

= 231 cm2

Answered by | 04 Jun, 2014, 03:23: PM

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