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Question

If a rectangular sheet is folded along its length to cover the curved surface of the cylinder with radius R and height H, then find the length and breadth of the rectangular sheet.
[2 Marks]

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Solution

Length of the rectangular sheet = Circumference of the cross-section of the cylinder
=2πR
[1 Mark]
Breadth of the rectangular sheet = Height of the cylinder
=H
[1 Mark]

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