Representation of data — practice question

A uniform solid cone has height $0.6\,\text{m}$ and base radius $0.2\,\text{m}$. A uniform hollow cylinder, open at both ends, has the same dimensions. The cone is placed inside the cylinder so that the cone’s base matches one end of the cylinder (see the diagram, which is a cross-section). The object has total weight $60\,\text{N}$ and its centre of mass lies $0.25\,\text{m}$ from the base of the cone.