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Volume of a Cylinder
Just multiply the area of the circle by the height of the cylinder:
- Area of the circle: π × r2
- Height: h
- Volume = Area × Height = π × r2 × h
How to remember: Volume = pizza
Imagine you just cooked a pizza.
The radius is "z", and the thickness "a" is the same everywhere ... what is the volume?
Answer: pi × z × z × a
(we would normally write "pi" as π, and z × z as z2, but you get the idea!)
It Doesn't Have to Be Circular
Usually when we say Cylinder we mean a Circular Cylinder, but you can also have Elliptical Cylinders, like this one:
You can even have stranger cylinders: if the cross-section is curved and is the same from one end to the other, then it will still be a cylinder.