cylinder
A cone would fit the given description.
circle
A Cone.
A face is any one of the 2-dimensional plane boundaries or surfaces of a solid object. Sometimes the term is also used for curved surfaces.
cylinder
no they don't have solid surfaces their surfaces are composed of gaseous material
circle
A cone would fit the given description.
A cylinder
a line
a plane
Venus and Mercury also have solid surfaces.
we can reduce it by providing lubrication means using oil between 2 surfaces as lubricant.
A Cone.
A bubble because you have the inside and outside, it may not be solid but it may be solid information I dont know. Patrick Ward http://www.aquashield.us.com
A prism