Just one at the base, the rest is a curved surface
A Cylinder
a sphere
That sounds like a cone. One surface is a circle and the other surface is curved.
No. A side normally means a flat surface and a sphere does not have one. It does have one curved surface.
semi-circle
An empty cone (like an ice-cream cone) doesn't have any flat surfaces. It has two curved surfaces, one outside and one inside. A solid cone has a flat base, and one other curved surface.
One if it is solid, two if it is hollow
a cone.
half circle
A cone.
Just one at the base, the rest is a curved surface
An empty cone (like an ice-cream cone) doesn't have any flat surfaces. It has two curved surfaces, one outside and one inside. A solid cone has a flat base, and one other curved surface.
A Cylinder
A cone.
a sphere
One if it is solid, two if it is hollow