10. In a building, there are 24 cylindrical pillars.For each pillar, r – InterviewSolution

1.	10. In a building, there are 24 cylindrical pillars.For each pillar, radius is 28 cm and height is4 m. Find the total cost of painting thecurved surface area of the pillars at the rateof ? 8 per m2.
Answer» R=28cm =0.28mh =4marea of curved surface =2πrh =7.04mcost per m square = 8cost for 7.04m = 7.04 x 8 =56.32m square x 24 = 1359.36Rs

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