Mensurationmedium · Past Paper
A conical tent is 9 m high and the radius of its base is 12 m. What is the cost of rice required to fill the tent if 1 m³ rice costs Rs 100?
ARs 135771
BRs 13571
CRs 45257
DRs 135600
✓ Correct Answer: B — Rs 13571
Vol = (1/3)πr²h = (1/3) × (22/7) × 12² × 9 = 1357.71 m³. Cost = 1357.71 × 100 = Rs 135771. (Wait, calc check: 22*144*3/7 = 1357.7). Correct choice a.
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