You have a 200 kg cylinder of ice. It is bobbing vertically in the water. Ice's density is 900 kg per cubic meter. If only 20 cm of the cylinder is above the water line, what is the area of the base of the cylinder? 2 cubic meters of 'Rebellium' is placed under the ice. The cylinder lifts up so that 30 cm is now exposed. What is the density of 'Rebellium'?