allery7 cm ব্যাসার্ধবিশিষ্ট একটি শঙ্কুর আয়তন 154 cm³ (pi = 22/7)। এর উচ্চতা কত?
A6 cm
B1 cm
C9 cm
D3 cm
Answer & Solution
Correct answer: D. 3 cm
(1/3)(22/7)(49)h = 154 থেকে আমরা পাই (154/3)h = 154, সুতরাং h = 3 cm।
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