Cylinder - a solid figure formed by two congruent parallel circles joined by a curved surface.
cube
A semicircle
A cylinder
Sphere, cylinder and a cone
A paraboloid.
Cylinder - a solid figure formed by two congruent parallel circles joined by a curved surface.
Sphere
cube
A semicircle
A figure with 2 circular bases and one curved surface is called a cylinder. Examples are food cans.
Circle
A cone.
A cylinder
Sphere, cylinder and a cone
It is a cylinder
I am not sure that such a surface can exist.