The equation for density goes as follows:
[tex]D= \frac{m}{v}
[/tex]
where D stands for density, m stands for mass, and v stands for volume
You plug in your values, and you get...
[tex]D= \frac{125}{24}
[/tex]
which turns out to be
[tex]D=5.21 g/cm^3[/tex]