Mensurationmedium · Past Paper
What is the cost of painting the curved surface of a cylinder with radius 7 m and height 10 m at the rate of Rs. 5 per sq. m?
ARs. 2200
BRs. 440
CRs. 1100
DRs. 2100
✓ Correct Answer: A — Rs. 2200
CSA = 2 * (22/7) * 7 * 10 = 440 sq. m. Cost = 440 * 5 = Rs. 2200.
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