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Question

It costs Rs.2200 to paint the inner curved surface of a cylindrical vessel 10 m deep. If the cost of painting is at the rate of Rs.20 per m2.Find Inner curved surface area of the vessel.
  1. 110 m2
  2. 140 m2
  3. 120 m2
  4. 210 m2

A
120 m2
B
110 m2
C
140 m2
D
210 m2
Solution
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If the cost of painting is at the rate of Rs.20 per m2, then it costs Rs 2200 for the area 220020=110m2

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