All of them.
Anything with mass has density.
Well, some planets, such as Mercury, have little density. For example, the amount of density in oil compared to water. That scenario is an example of the amount of density that you might expect on such planets as Venus.
No. Terrestrial planets are much denser than Jovian planets.
Inner planets
The Terrestrial planets have a higher density. Their structure includes a large percentage of rock, while the Jovian planets are composed mostly of gas.
Jovian planets are more massive and lower in average density. Terrestrial planets are smaller and higher in average density.
Mercury is the smallest of the four inner planets and closest to the sun. It is also the smallest of all eight planets.
The four Jovian planets
Mercury Venus Earth Mars.
i dont knoww
The terrestrial planets are primarily composed of rock and the jovian planets are mostly gas (primarily Hydrogen). Rock has a higher density than Hydrogen, giving the terrestrial planets a higher density.
The Earth has the greatest average density, of all the planets.
But you CAN determine the size of the planets: in diameter, overall mass, and in density.