alleryπ = 22/7 मानते हुए, 7 cm त्रिज्या और 10 cm ऊंचाई वाले एक बेलन का आयतन ज्ञात कीजिए।
A440 cm³
B1540 cm³
C1100 cm³
D770 cm³
Answer & Solution
Correct answer: B. 1540 cm³
आयतन = πr²h = (22/7) × 49 × 10 = 1540 घन सेंटीमीटर (cm³)।
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