A cylindrical oil storage tank 12 feet in diameter and 17 feet long is lying on its side. Suppose the tank is half full of oil weighing 85 lb per cubic foot. What's the total force on one end of the tank? The relevant relationships are that pressure wherepis fluid density andhis height below the surface of the fluid, and whereAreais the area of the surface under pressurep.

I spent hours on this problem and got a force of around 6,000lbs but apparently that's not right! How would you do this problem? What should I have gotten?