A cylinder
A 3D shape with one curved face is a cylinder. It has a circular base and a curved surface that connects the two bases. The curved face wraps around the side, while the top and bottom faces are flat circles.
A cone
cone
A cylinder. Also, howsabout a hemisphere ?
A cylinder has two parallel congruent faces and a curved surface.
Cylinder
sphere
The 3D shape made of two circles and rectangles is a cylinder. It consists of two circular bases connected by a curved rectangular surface, which wraps around the sides. This shape is commonly found in everyday objects, such as cans and pipes. The circles represent the top and bottom faces, while the rectangles form the lateral surface.
its a lens...1 curved edge = a circle, 1 flat surface = back, 1 curved surface = front. (these are used in some battery-less flashlights, as an example.)
A cylinder or half a torus (donut), or a long tubular shape whose ends are lined up so as to be parallel..
A cube
cone