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      Question

      If the height of a cylinder is doubled and radius is

      reduced by 75%, then what is the percentage change in its volume?
      A 50% Correct Answer Incorrect Answer
      B 49.5% Correct Answer Incorrect Answer
      C 68% Correct Answer Incorrect Answer
      D 87.5% Correct Answer Incorrect Answer

      Solution

      ATQ, Volume of cylinder = ╧Аr┬▓h Height = 1 : 2 Radius = 4 : 1 Ratio = 16 : 2 = 8 : 1 Change = 1 ├Ч 100 / 8 = 12.5% 100 тАУ 12.5 = 87.5%

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