I always get stuck in these type of questions, can some one help me to find the answer for this question. In this question we have to find find the weight of the solid pillar, some part in it is in the form of a right circular cylinder and the remaining in the form of a right circular cone. The radius of the base of each part is 8 cm. The height of the cylindrical part is 240 cm and the conical part is 36 cm high. If the density of iron is 7.8 gms. I have to find the volume or the surface area or some thing else??????