Mathematics · Mensuration
एक गोलाकार गुब्बारे में हवा भरने पर उसकी त्रिज्या 3.5 सेमी से बढ़कर 4.9 सेमी हो जाती है। मूल गुब्बारे के आयतन में हुई प्रतिशत वृद्धि कितनी है?
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