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Q:

If the height of a cylinder is increased by 15% and the radius of its base is decreased by 10%, then by what percent will its curved surface area change?

  • 1
    3.5 % decrease
  • 2
    3.5 % increase
  • 3
    5 % increase
  • 4
    5 % decrease
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Answer : 2. "3.5 % increase"

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