I'm having trouble with this problem below: 1000 cm^3 of oil is spilled onto a smooth lake. If the oil spreads out uniformly until it makes an oil slick just one molecule thick, with adjacent molecules just touching, estimate the diameter of the oil slick. The diameter of the oil molecules have a diameter of 2 X 10^-10 cm. Here's what I did. Volume of the slick = pi*r^2*h 1000 = pi*r^2*1 (since it is just one molecule thick) r = 17 d = 34 Now do I multiply 34 by 2 X 10^-10 cm to ge the diameter of the oil slick? Thanks so much.