Question: Water is falling on a surface, wetting a circular area that is expanding at a rate of 3 mm / s. How fast is the

Water is falling on a surface, wetting a circular area that is expanding at a rate of 3 mm / s. How fast is the radius of the wetted area expanding when the radius is 153 mm? (Round to four decimal places.) A. 0.0062 mm/s B. 320.4422 mm/s c. 0.0031 mm/s O D. 0.0196 mm/s
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