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Q:

एक गोले की त्रिज्या के दुगुनी होने पर उसके आयतन में कितने प्रतिशत वृद्धि होगी? 

  • 1
    200 %
  • 2
    450 %
  • 3
    550 %
  • 4
    700 %
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Answer : 4. "700 % "

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