A rectangular sheet of paper 11cm into 4cm is rolled along its length to form a cylinder find T.S.A and volume of cylinder so formed
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Volume?
vol. = πr^2h
u can take it out from it
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Answer.
Given rectangular sheet of paper is rolled along its breadth length = 28 cm breadth = 22 cm Hence height of cylinder, h = 28 Circumference of the base of cylinder = 2πr = 22 cm 2 × (22/7) × r = 22 Therefore, r = 7/2 = 3.5 cm Volume of cylinder = πr2h = (22/7) × (3.5)2 × 28 = 1078 cu cm Thus the volume of the cylinder is 1078 cu cm.
Length and breadth are different than your answer...
no
they are same
length will be circumference
and breadth will be height
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