Here's our best estimate: **8904 dimes**.

Dime, the smallest, thinnest coin in use today has the following specifications:

## Weight: 2.268 g

## Diameter: 0.705 in (17.91 mm)

## Thickness: 1.35 mm

Get the volume of the dime using the formula: **VOLUME = π * (radius)² * height**

Plug in the numbers:

V= 3.14159 * (8.955 mm)² * 1.35 mm

V= 3.14159 * 80.192025 mm * 1.35 mm

V= 340.10641343226 mm³

We know that 1 gallon = 3785412 mm³ - Metric-Conversions.org

Now, divide the volume of the jug by the volume of a dime:

## 3785412 mm³ / 340.10641343226 mm³

## 11130.0812055

But since they don't fit in perfectly, you are really looking at less. Upon estimation, they pack about 80% efficiently.

Now, divide your estimate for the volume of a penny into 80% of the volume of the jug.

## 80% of 3785412 mm³ = 3028329.6 mm³

## 3028329.6 mm³ / 340.10641343226 mm³

8904.06496437dimes.

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