Mathematics · Mensuration
एक शंकु, एक अर्धगोला और एक बेलन समान त्रिज्या r के आधार पर खड़े हैं और उनकी ऊंचाई समान है। यदि शंकु, अर्धगोले और बेलन के आयतनों का योग त्रिज्या R के एक गोले के आयतन के बराबर है, तो R3r3 किसके बराबर है?
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