Depends on how densely they're packed, but to get a first-hand estimate, do the following:

Determine the volume of a quarter. See information from the US mint.

Diameter: 24.26 mm

- Thickness: 1.75 mm

To get the Volume, use this formula: (pi) r2h

- V = (pi) r2h
- = 3.14 * 12.332 * 1.75
= 835.4 mm3

Get the volume of 2L bottle in cubic millimeters:

2 L = 2000000 mm3

Now, divide the volume of the bottle by the volume of a single quarter.

Because of the irregularities of the shape of the container as well as the coin, the quarters only take about 75 percent of the total volume of the bottle (75% of 2000000 mm3 = 1500000 mm3)

- = 1500000 mm3 / 835.4 mm3
- = 1796 quarters

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