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      Question

      If the ratio of areas of two circle is 4:25, then the

      ratio of their circumferences will be:
      A 5:7 Correct Answer Incorrect Answer
      B 3:4 Correct Answer Incorrect Answer
      C 2:5 Correct Answer Incorrect Answer
      D 6:7 Correct Answer Incorrect Answer

      Solution

      Ratio of area of two circles = (Ratio of radius)2 = 4:25 Ratio of Circumference = Ratio of radius Hence, Ratio of Circumference = √(4/25) = 2:5

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