What is the density of a black hole and are they all the same?

Question

Do bigger black holes have the same density as small black holes but are just greater in volume?

In: Physics

Answer 1

For a non rotating black hole, the radius R of the event horizon and the mass are proportional, but the volume grows as R^3, so the density is proportional to R^-2, meaning small black holes are denser than large black holes.