Density is mass per unit volume, so to get the density of each metal, divide the corresponding mass by the volume.
• Metal 1:
(22.1 g)/(3.00 cm³) ≈ 7.37 g/cm³
• Metal 2:
(42.0 g)/(4.00 cm³) = 10.5 g/cm³
• Metal 3:
(9.32 g)/(5.00 cm³) ≈ 1.86 g/cm³
• Metal 4:
(8.13 g)/(3.00 cm³) = 2.71 g/cm³