a hand fan is made up of cloth fixed in between the metallic wires.it is in the shape of a sector of a circle of radius 21cm and of angle 120⁰ as shown in fig.calculate the area of the used and also find the total length of the metallic wire required to make such a fan?
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a hand fan is made up of cloth fixed in between the metallic wires.it is in the shape of a sector of a circle of radius 21cm and of angle 120⁰ as shown in fig.calculate the area of the used and also find the total length of the metallic wire required to make such a fan?
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