1. Calculate the volume of the cube:
\text{Volume}=\text{side}^3=4^3=64\,\text{cm}^3
2. Use the formula for density:
\text{Density} = \frac{\text{Mass}}{\text{Volume}}
3. Plug in the values:
\text{Density} = \frac{6.8 \, \text{grams}}{64 \, \text{cm}^3}
4. Compute the density:
\text{Density} = 0.10625 \, \text{grams/cm}^3