alleryयदि किसी बेलन की त्रिज्या दोगुनी कर दी जाए और ऊंचाई समान रखी जाए, तो इसका आयतन कितने गुना हो जाएगा?
A4 गुना
B3 गुना
C8 गुना
D2 गुना
Answer & Solution
Correct answer: A. 4 गुना
आयतन त्रिज्या के वर्ग पर निर्भर करता है, इसलिए त्रिज्या को दोगुना करने पर आयतन 4 गुना हो जाता है।
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