দুটি বৃত্তের ব্যাসার্ধের অনুপাত ৩ঃ২, বৃত্ত দুটির আয়তনের অনুপাত কত হবে?
A. ২ঃ৩
B. ৩ঃ৪
C. ৪ঃ৯
D. ৯ঃ৪
সঠিক উত্তরঃ
D.
৯ঃ৪
Explanation:
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