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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. 


  1. Length of the rectangular sheet = πR
  2. Breadth of the rectangular sheet = H
  3. Length of the rectangular sheet = 2πR
     
  4. Breadth of the rectangular sheet = 2H


Solution

The correct options are
B Breadth of the rectangular sheet = H
C Length of the rectangular sheet = 2πR
 

Length of the rectangular sheet = Circumference of the cross-section of the cylinder
=2πR


Breadth of the rectangular sheet = Height of the cylinder
=H

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