The mass is 3.3 X 10^26, radius is 2.44 X 10^8 what is the volume and density?

Question

When I try to figure this problem its always wrong for some reason. By the way this is for measuring planets.

Answer 1

Planets are spheres. The volume of a sphere is

4/3 π r³

where r is the radius in meters.

The density is mass ( in kg ) divided by volume ( in m³ ).

Answer 2

volume of a sphere is 4/3 x pi x r^3
so (4/3)(pi)(2.44x10^8)^3 = volume
desity is equal to mass/volume
so take the mass and divide it by volume