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Math Help - More related rates!!!

  1. #1
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    Smile More related rates!!!

    Assume that a female's height is a constant 160 cm, but she is on a diet. If she loses 3kg per month, how fast is her surface area decreasing at the instant she weighs 60 kg?
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  2. #2
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    What is the equation for surface area? Am I supposed to know what it is? (not trying to be sarcastic just asking.)
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  3. #3
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    they don'y give it to me in the problem
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