একটি ধাতব ঘন(cubical) বস্তুর ওজন ৮ কেজি।একই ধাতুর তৈরী আরেকটি ঘন বস্তু যার প্রতিটি বাহু দ্বিগুণ হলে বস্তুটির ওজন কত কেজ???
A. 48
B. 32
C. 24
D. 64
সঠিক উত্তরঃ
D.
64
Explanation:
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