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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

r=θ×l360r=?,θ=60, l = radius of the orginal sector of a circle = 14cm
r=60×14360=73=213cm