Cone

Cone Facts
Notice these interesting things:
	It has a flat base
	It has one curved side
	Because it has a curved surface it is not a polyhedron.

And for reference:
	Surface Area of Base = π × r²
	Surface Area of Side = π × r × s
or	Surface Area of Side = π × r × √(r²+h²)

	Volume = π × r²× (h/3)

Instructions: In "spin" mode it freely spins and will respond to your mouse. In "drag" mode it stops spinning and you can use your mouse to move it.

A Cone is a Rotated Triangle

A cone is made by rotating a triangle!

The triangle has to be a right-angled triangle, and it gets rotated around one of its two short sides.

The side it rotates around is the axis of the cone.

The volume formulas for cones and cylinders are very similar:

The volume of a cylinder is:	π × r²× h
The volume of a cone is:	π × r²× (h/3)

So, the only difference is that a cone's volume is one third (¹/₃) of a cylinder's.

So, in future, order your ice creams in cylinders, not cones, you get 3 times more!