Question
Download Solution PDFএকটি ফাঁপা গোলকের বহিঃ ব্যাসার্ধ 4 সেমি এবং অন্তঃ ব্যাসার্ধ 1 সেমি। এই ফাঁপা গোলকের আয়তন কত?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
ফাঁপা গোলকের জন্য,
বহিঃ ব্যাসার্ধ (ro) = 4 সেমি।
অন্তঃ ব্যাসার্ধ (ri) = 1 সেমি।
ব্যবহৃত ধারণা:
ফাঁপা গোলকের আয়তন
ফাঁপা গোলকের আয়তন = 4/3π(ro3 - ri3)
গণনা:
ফাঁপা গোলকের আয়তন = (4/3)π × (43 - 13)
⇒ (4/3)π × (64 - 1)
⇒ (4/3)π × 63
⇒ 84π
∴ ফাঁপা গোলকের আয়তন 84π সেমি3।
Last updated on Jul 11, 2025
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