Mensurationhard · Past Paper
A conical tent is 9 m high and its base radius is 12 m. What is the cost of canvas required at Rs. 100 per sq. m?
ARs. 56520
BRs. 47100
CRs. 18840
DRs. 565200
✓ Correct Answer: A — Rs. 56520
l = sqrt(9² + 12²) = 15 m. CSA = πrl = 3.14 * 12 * 15 = 565.2 m². Cost = 565.2 * 100 = 56520.
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