A sphere has one continuous curved surface.
A sphere has just one curved face.
One if it is solid, two if it is hollow
It is curved
Yes.
There is 1 curved surface on a sphere
Sphere
A sphere?
a sphere
*concave . curved like a segment of the interior of a circle or hollow sphere; hollow and curved
One curved surface (two if it is hollow) and no edges.
Only one of them.