If you're asking "How many surfaces are there on a 3-dimensional cone? then the answer is 2: The first surface is the circular base. The 2nd is the actual "cone" part that wraps around to a point above the circle.
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#1 a cone is 3d and a rectangle is 2d. #2 a cone has a circular base and a ractangle has 4 sides that only 2 are parralel
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no stupid because one has got faces(3d) and the other has sides(2d)
The base of a cone is a circle, and circle have an infinite amount of sides