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A sector of a circle of radius 14cm containing an angle 60

A sector of a circle of radius 14cm containing an angle 60o is folded to form a cone. Calculate the radius of the base of the cone

A.

512cm

B.

423cm

C.

312cm

D.

213cm

Correct answer is D

Length of arc = circumference of the base of the

cone θ360×2πR=2πr

θR360 = r

r = 60×14360

= 73=213cm