Please consider the diagram of cylinder.
We have been given that the mass of the cylinder is 50000 g. We are asked to find the density of the cylinder.

Let us find the volume of our given cylinder.
, where
r = Radius,
h = Height.
We know that radius is half the diameter, so radius of given cylinder would be
mm.







Therefore, the density of the cylinder is approximately 2.7 gram per cubic mm.