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As an ice cube melts its surface area in decreasing at a rate of 6 cm^2 / sec. Find the rate at which the length of each side is decreasing at the moment when each side has length 2 cm.

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Daniel

  1. cube side = x, so the area
    a = 6x^2
    da/dt = 12s dx/dt

    Now just plug in your numbers.

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    Steve

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