(a). What cross section is obtained when a vertical cut is given to a conical cap.
(b). Write the number of edges of
(1). a cylinder
(2). a cube

(a). We can give a vertical cut to a conical cap in the following way.

So, the cross section is a sector of a circle.
(b). 
(i) Number of edges in a cylinder = 0
(ii) Number of edges in a cube = 12