Two oil tankers crash in the Pacific ocean. The spreading oil slick has a
circular shape, and the radius of the circle is increasing at 200
meters per hour.
a) Express the radius of the spill, r, as a power function of time, t,
in hours since the crash.
b) Express the area of the spill, A, as a power function of time, t.
For a) would the formula be f(r) = 200t^2?
For b) would the formula be f(a) = pi(200t)^2?
Thanks for the help.