cylindrical Tower is 5 metre in diameter and 14 M height find the cost of white washing on its curved surface at the rate of 10rs per msq
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Given diameter=5m and height =14m and cost =50 paise per m2
We k.n.t curved surface area =πdh, where d and h corresponds to diameter and height.
Therefore, curved surface area =πdh=π×5×14=219.9m2.
Total cost =area×cost per unit area
=220×0.50 Rs. per m2
= Rs. 110
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