Hey guys.. on my last question for the 2nd last lesson for the course.. meaning I only have 1 more lesson after this. I would like to mail this in tomorrow morning, so some help would be nice..

Here it is:

A gas tank on a dock has a small puncture and is leaking gas at the rate of 1 cm^3/min into the lake. It forms a circular slick that is 1mm thick on the surface of the water.

a) Find the amount of gas leaked as a function of time

I believe this will be f(x) = 1ml(x) with x being minutes (Should I change this to seconds?)

b) State the radius of the slick as a function of it's volume

Not sure what to do here? Is this a sphere with a radius of 1mm?

c) State the radius of the slick as a function of time

Again.. Since this slick is 1mm thick, does this make it a sphere?

d) What is the radius of the slick after 40 minutes?