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Question

The formula for finding the total surface area of a cylinder having cone shaped lid at both the ends, will be
  1. πr(l+2r)
  2. πr(2h+r)
  3. 2πr(h+l)
  4. 2πr(h+2r)

A
2πr(h+l)
B
πr(2h+r)
C
πr(l+2r)
D
2πr(h+2r)
Solution
Verified by Toppr

Total Surface Area of cylindrical part =2πrh
Surface Area of two cones =πrl+πrl=2πrl
Then, Total Surface Area =2πrh+2πrl=2πr(h+l)

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