It is an edge.
If its 2d its called a semi-circle, if its 3d its called a semi-sphere.
Surface area is all the areas for a 3 figure. Area is for only on side of a 3d figure
Sometimes because a sphere which is a 3d figure has a diameter
A 2D seven sided figure is called a heptagon. A 3D seven faced polygon is called a heptahedron.
It is an edge.
If its 2d its called a semi-circle, if its 3d its called a semi-sphere.
The cone IS a 3d figure.
It depends on the type of figure. If it is a 2D figure, then it is called area. If it is a 3D figure, then it is called volume.
A solid.
Yes.
Volume if it's a 3D figure and area if it's a 2D figure
Surface area is all the areas for a 3 figure. Area is for only on side of a 3d figure
A three-dimensional figure with 30 faces is called a triacontahedron.
Sometimes because a sphere which is a 3d figure has a diameter
A side of a solid figure is called a face.
A 2D seven sided figure is called a heptagon. A 3D seven faced polygon is called a heptahedron.