Question

Consider a tray that is 25cm by 40 cm. The mass of the gold plated on the top surface of the tray is 3.86grams. Given that the density of gold is 19.3g/cm^3 determine the thickness of the gold on the top of the tray. I need the answers for the following: length, width, mass, density, volume, area, and thickness, put in the calculations so I can see how you got the answers. Thanks