a tanker that ran aground is leaking oil that forms a circular slick about 0.2 ft thick. to estimate the rate dV/dt (in cubic ft per min) at which oil is leaking from the tanker, it was found that the the radius of the slick was increasing at 0.42 foot per minute(dR/dt=0.42) when the radius, R=600 feet. Find dT/dt using pi=3.14