1. An oil tanker is leaking oil that forms a circular oil slick that is 0. Ift thick. To estimate the rate at which the oil is leaking from the tanker, it was found that the radius of the slick was increasing at a rate of 0.32 ft/min when the radius was 500 ft. Find the rate at which the oil is leaking from the tanker. 2. If the volume V = s' of an expanding cube is increasing at the constant rate of 120 cubic inches per second, how fast is the length s of the sides increasing when the volume is 8 cubic inches