2 flat and 1 curved
2
Yes, the top and the bottom.
A paper cup typically has three flat surfaces: the bottom, which is circular, and the two sides which are usually straight and flat. These surfaces are necessary for the cup to hold its shape and be able to stand upright.
A cylinder has 2 flat surfaces and 1 curved surface.In differential geometry, a cylinder is defined more broadly as any ruled surface spanned by a one-parameter family of parallel lines. As such it can have any number of flat surfaces but need not have any at all. A cylinder whose cross section is an ellipse, parabola, or hyperbola is called an elliptic cylinder, parabolic cylinder, or hyperbolic cylinderrespectively; these have no flat surfaces.
There are 2 flat surfaces, both are circles.
2 flat surfaces unless it is rolled up in which case it has 2 curved surfaces.
a plane
The top and bottom flat surfaces (the 2 circles or ellipses) and the curved surface make up the 3 surfaces.
Flat surfaces?... Well, a cone has a circle on the bottom (as its base) and, when rolled out, a rectangle for its side that the apex is part of at the top. So I'd say the answer to your question is "2," if I have a correct understanding your question. ~OneAndOnly13
2 flat and 1 curved
A cylinder has 2 opposite parallel flat surfaces.
0 vertices 0edges 2 flat surfaces
A cylinder has 2 flat surfaces.
2
a cylinder
2