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Its a pentagonal prism.
A right circular cone could probably do that.
The shape is 3 dimensional, the top down view is 2 dimensional.
the shape of a dome volcano is like an triangle
A square.
Front view = elevation, top view = plan and side view = end elevation
It depends on the shape. The top of a pyramid will be a point (the apex). The top (and bottom) of a prism or an antiprism will be congruent polygons.
The given net shows a hexagonal prism, which is a three-dimensional shape with two hexagonal faces and six rectangular faces connecting them. The hexagonal faces are the bases of the prism, while the rectangular faces are the lateral faces. When the net is folded along the edges and assembled, it forms a hexagonal prism with a regular hexagon as its base and top.
Three dimensional printers and computing
For example, if you keep on stacking squares (two dimensional figure) on top of one another, it will slowly form a cuboid (three dimensional figures). There is a mathematical way of calling it. Google it!
Pyramid
A hexagonal prism.