Cone

The flat face of a cylinder is circular. The cone has a curved face, a circular flat face and a vertex. The pointy end of a cone is called the vertex. The flat part is the base. An object shaped like a cone is said to be conical. Because it has a curved surface, it is not a polyhedron.

Surface area of base =π × r²

Surface area of side = π × r × s    or    π × r × √(r2+h2)

Volume =  π × r2 × (h/3)