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Q:

The area of a circle is proportional to the square of its radius. A small circle of radius 3 cm is drawn within a larger circle of radius 5 cm. Find the ratio of the difference between the area of the larger circle and that of the smaller circle to the area of the larger circle.

  • 1
    16: 25
  • 2
    9: 25
  • 3
    9:16
  • 4
    16: 27
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Answer : 1. "16: 25"

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