How many pennies in 1.75 liter bottle?

To estimate how many pennies can fit in a 1.75-liter bottle, we first need to know the volume of a penny. A U.S. penny has a diameter of about 1.9 cm and a thickness of 1.5 mm, giving it a volume of approximately 0.36 cm³. Since 1.75 liters is equivalent to 1,750 cm³, you could fit roughly 4,860 pennies in the bottle, assuming there is no air space and that the pennies are packed tightly. However, in practice, the actual number may be lower due to packing inefficiencies.