Radioactive contamination It has been estimated that 1000
Chapter 2, Problem 2.4.72(choose chapter or problem)
Radioactive contamination It has been estimated that 1000 curies of a radioactive substance introduced at a point on the surface of the open sea would spread over an area of 40,000 in 40 days. Assuming that the area covered by the radioactive substance is a linear function of time t and is always circular in shape, express the radius r of the contamination as a function of t.
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