Torus

Torus Facts Notice these interesting things:   It can be made by revolving a small circle along a line made by another circle.   It has no edges or vertices   It is not a polyhedron   And for reference:   Surface Area = 4 × π2 × R × r   Volume = 2 × π2 × R × r2   Note: Area and volume formulas only work when the torus has a hole!
And did you know that Torus was the Latin word for a cushion? (This is not a real roman cushion, just an illustration I made)	Torus in the Sky. The Torus is such a beautiful solid, this one would be fun at the beach !