An aluminium cylinder has a mass of 0.0540 kg0.0540 \text{ kg}0.0540 kg.
(i) Calculate the weight of this aluminium cylinder. Take g=10 N/kgg = 10 \text{ N/kg}g=10 N/kg. Give the unit.
(ii) State the equation linking density, mass and volume.
(iii) The density of aluminium is 2700 kg/m32700 \text{ kg/m}^32700 kg/m3. Calculate the volume of this aluminium cylinder.
The graph shows the masses of some materials when their volume is 1 m31 \text{ m}^31 m3.

(i) State the type of graph shown.
(ii) Use information from the graph to compare the densities of glass and iron.