A rectangular sheet of paper 88cm×21cm is rolled along its length and cylinder is formed . find the total surface area of thecylinder.​

length =88cm

breadth=21cm

when it is rolled it becomes cylinder

having diameter 21cm

total surface area of the cylinder =2πr(r+h).

=2π×21/2(21/2+88)=2×22/7×21/2(21/2+88)

=2×11×3(21/2+88)=6501 cm²

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