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      Question

      The radius and height of cylinder A are 5 cm and 6 cm

      respectively. The radius of cylinder B is twice the radius of A, and its height is half the height of A. What is the ratio of the total surface area of ​​A to the curved surface area of ​​B?
      A 10 : 11 Correct Answer Incorrect Answer
      B 13 : 14 Correct Answer Incorrect Answer
      C 12 : 13 Correct Answer Incorrect Answer
      D 11 : 6 Correct Answer Incorrect Answer

      Solution

      The correct answer is D

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