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Math Help - Very confused on how to make functions from words

  1. #1
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    Oct 2008
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    Very confused on how to make functions from words

    Here's one of the problems...
    A cylindrical can has a volume of 400piecm³. The material for the top and bottom costs 2cents per square centimeter. The material for the vertical surface costs 1cent per square centimeter.

    Express the cost C of the materials used to make the can as a function of the radius R.

    Where do I begin?
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  2. #2
    Junior Member
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    Oct 2008
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    Smile

    Never mind, I understand now.
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