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If the height of a cone is decreased by 20% whereas its radius is increased by 25% , can we find the percentage increase in total surface of the cone ?

With the above information , I am trying to find the answer in the traditional way using formulae, but I am not able to arrive at the answer. Is the data inconsistent in the above question ? If yes, can you explain why ?

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    Huh. Doesn't look like the percentage is going to be a constant.2012-07-04

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