Initial volume of water in graduated cylinder before adding rods: 19.6 ml Length (cm) Diameter Mass Volume after adding rod (cm) (g) (ml) Silver rod 1.89 1.50 7.611 22.9 Gold rod 3.88 1.56 63.040 30.2 Blue rod 2.56 1.56 7.278 35.2 Volume by Volume by Density by displacement measurement Density by measurement (ml) (cm' ) displacement (g/ml) (g/cm) Silver rod Gold rod Blue rod Volume of a cylinder = nor2.h 1 cm = 1 ml