Twenty one cylindrical pillars of the Parliament House are to be clean – InterviewSolution

1.	Twenty one cylindrical pillars of the Parliament House are to be cleaned. If the diametre of each pillar is 0.50m and height is 4m, What will be the cost of cleaning them at the rate of Rs. 2.50 per square metre?
Answer» Twenty one cylindrical pillars of the Parliament House are to be cleaned. If the diametre of each pillar is 0.50m and height is 4m, What will be the cost of cleaning them at the rate of Rs. 2.50 per square metre?

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