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      Question

      The solid spheres of radius 3 cm, 4 cm and 5 cm are melted and recasted into a solid sphere. What will be the percentage decrease in the surface area?

      A 14 percent Correct Answer Incorrect Answer
      B 12 percent Correct Answer Incorrect Answer
      C 16 percent Correct Answer Incorrect Answer
      D 28 percent Correct Answer Incorrect Answer

      Solution

      The correct answer is D

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