Not an actual problem, but I'm not sure how to figure these out. I am given the mass of a sample of aluminum. (Let's say it's 112g or something) I am given a shape: cylindrical tube, with the conditions that the diameter of the circular face = the height. (Also given, density of aluminum, a chart with the resistivity values, at standard temp of 20C). How on earth would I find the resistance between the top and the bottom face of the shape?