Explanation
Step - 1: Define Polyhedron
A polyhedron is a three dimensional shape with flat polygonal faces, straight edges
and sharp corners or vertices.
Step - 2: Eliminate options
From the above options,
Cones, spheres, and cylinders are non-polyhedrons
Because their sides are not polygons and they have curved surfaces.
Hence , option(C) is correct, cube is a polyhedron.
and sharp corners or vertices
From the above options, all except option (D) is not a polyhedron, because it is a cone.
Hence , option(D) is correct, It is not a polyhedron.
Please disable the adBlock and continue. Thank you.