The gold at Fort Knox is stored in bars that measure 9.2 cm by 4.1 cm by 17.8 cm. Gold weighs 19.3 grams per cubic centimeter.
a. What is the volume of each bar? Round to the nearest 0.1 cm³
Volume = length x width x height
Volume = 9.2 cm x 4.1 cm x 17.8 cm
Volume = 658.824 cm³
Round to the nearest 0.1 cm³: 658.8 cm³
b. How much does each bar weigh?
Weight = Volume x Density
Weight = 658.8 cm³ x 19.3 g/cm³
Weight = 12,712.44 grams
Weight = 12.7 kg
Each bar weighs approximately 12.7 kg.