Question

A solid S is made up of a cylindrical part and conical part. The height of the Soild is 4.5m. The common radius of the cylindrical part and the conical part is 0.9m. The height of the conical part is 1.4m.


b. Calculate the total surface area of soild S.

Answer 1

just like the volume one, but you only have to find the lateral area of the cone, and skip the top base of the cylinder.