a rectangular piece of paper having length 28 cm and length 20 cm is rolled along with the length to form a cylinder find the curved surface area of the cylinder thus formed
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curved surface area of a cylinder = 2×pi×r×h
2×pi×r= length
h= breadth
length = 28cm
breadth = 20 cm
csa of the cylinder = 28×20
=560cm^2
2×pi×r= length
h= breadth
length = 28cm
breadth = 20 cm
csa of the cylinder = 28×20
=560cm^2
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