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A cylindrical water tank has a diameter of 140cm.To begin with it is full of water.A leak starts at the bottom so that it loses 33l of water in 1hour.How long will it take for the water level to fall by 30cm?

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    Are you sure you typed this correctly? It doesn't make sense for them to give you the diameter and ask about the level falling. Should 140 cm be the height?

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