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      Question

      If the height of a cylinder becomes triple and radius

      is decreased by 20%, then what is the percentage change in its volume?
      A 50% Correct Answer Incorrect Answer
      B 92% Correct Answer Incorrect Answer
      C 68% Correct Answer Incorrect Answer
      D 80% Correct Answer Incorrect Answer

      Solution

      ATQ, Volume of cylinder = ╧Аr┬▓h Height = 1 : 3 Radius = 5 : 4 Ratio = 25 : 48 Change = 48 ├Ч 100 / 25 = 192% Since > 100, increase = 92%

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