# A square piece of paper of side 12cm is rolled to form of a cylinder . find the curved surface of area of the cylinder

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by anaysingh

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by anaysingh

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Height of the cylinder = 12 cm

C.S.A of a cylinder = 2 x pi x r x h

= (2 x pi x r) x h

=12 x 12

= 144 sq cm.