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Question
22. Find the cost of painting 20 cylindrical pillars of an institution at the rate of \( ¥ 3 \) per \( m ^ { 2 } \) if
the radius and the height of each pillar are \( 36 \mathrm { cm } \) and \( 3.5 \mathrm { m } \) respectively.
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Find the cost of painting 20 cylindrical pillars of an institution at the rate of Rs. 3 per m2, if the radius and the height of each pillar are 36cm and 3.5m respectively.
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