depends i meen ice can have a curved surface
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The surface area of a polyhedron can be calculated by first calculating the area of each of its polygonal surfaces and adding these together.The surface area of some curved solids (sphere, cylinder, cone) can be calculated from formula but for most curved solids are more complicated and require integration.
Flat surfaces: 6Curved surfaces: 0.
yes
A Sphere, a cylinder and a cone.
None. A cuboid has six flat surfaces.