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The area of a sector of a circle with ce...

The area of a sector of a circle with central angle `60^@` is A. The circumference of the circle is C. Then A is equal to :
किसी वृत्त के खंड का क्षेत्रफल A है जिसका केंद्रीय कोण `60^@` है | इस वृत्त की परिधि C है | तो A किसके बराबर है ?

A

`c^2/(6 pi)`

B

`c^2/(18 pi)`

C

`c^2/(24 pi)`

D

`c^2/(4 pi)`

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