Surface
The question does not specify of what object the curved surface area is required. Without this information then a meaningful answer cannot be provided.
a sphere has no bases and it only has one curved surface
A circle or a sphere.
A semicircle
curved
Surface
half circle
The question does not specify of what object the curved surface area is required. Without this information then a meaningful answer cannot be provided.
It is the total surface area.
a sphere has no bases and it only has one curved surface
It is the Trajectory.
Projectile motion
a sphere
A circle or a sphere.
A semicircle
A sphere has no faces and no edges. It is a three-dimensional object with a curved surface and only one continuous boundary.