alleryজল 30 cm ব্যাসার্ধের গভীরে-7 cm সিলিন্ডার একটি খালি 22 × 15 সেমি বেস ট্যাঙ্ক পূরণ করে; গভীরতা? π = 22/7।
A7 cm
B28 cm
C21 cm
D14 cm
Answer & Solution
Correct answer: D. 14 cm
স্থানান্তরিত আয়তন হল (22/7) × 7² × 30 = 4620 সেমি ³, গভীরতা 4620 ÷ (22 × 15) = 14 সেমি।
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