Radius of the rain drop at any time.

Firdhaws Posts: 2, Reputation: 1

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Sep 8, 2012, 07:02 AM

radius of the rain drop at any time.

Assume that a spherical rain drop evaporates at the rate proportional to its surface area. If the original radius is 3mm and one hour later reduces to 2mm, find an expression for the radius of the rain drop at any time.

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