The radius of a circular oil spill after t minutes is given by r(t) = V4t. Find the instantaneous rate at which the %3D radius is growing after 34 minutes. Give your answer as a decimal approximation with at least 3 decimal places. ft min

A driver of a car stopped at a gas station to fill up his gas tank. He looked at his watch, and the time read exactly 3:40 p.m. At this time, he started pumping gas into the tank. At exactly 3:44, the tank was full and he noticed that he had pumped 10.7 gallons. What is the average rate of flow of the gasoline into the gas tank?