To determine the material we will determine the density using the values of mass and volume. We will use the following formula:
[tex]\rho=\frac{m}{V}[/tex]
Where:
[tex]\begin{gathered} \rho=\text{ density} \\ m=\text{ mass} \\ V=\text{ volume} \end{gathered}[/tex]
Now, we plug in the values:
[tex]\rho=\frac{12g}{4cm^3}[/tex]
Solving the operations:
[tex]\rho=3\text{ g/}cm^3[/tex]
The closest material is the one with a density of:
[tex]\rho=2.7\text{ g/}cm^3[/tex]
Therefore, the material could be aluminum.
