Cylinders - Overview
Cylinders - Overview
Cylinder Facts:
Notice these interesting things:
An object shaped like a cylinder is said to be cylindrical.
Surface Area of a Cylinder:
The Surface Area has these parts:
Imagine you just cooked a pizza.
The radius is "z", and the thickness "a" is the same everywhere ... what is the volume?
Volume = pi × z × z × a
(we would normally write "pi" as π, and z × z as z2, but you get the idea!)
Notice these interesting things:
- It has a flat base and a flat top
- The base is the same as the top
- From base to top the shape stays the same
- It has one curved side
- The cross-section of a cylinder is a circle
An object shaped like a cylinder is said to be cylindrical.
Surface Area of a Cylinder:
The Surface Area has these parts:
- Surface Area of Both Ends = 2 × π × r2
- Surface Area of Side = 2 × π × r × h
- Area of the base: π × r2
- Height: h
Imagine you just cooked a pizza.
The radius is "z", and the thickness "a" is the same everywhere ... what is the volume?
Volume = pi × z × z × a
(we would normally write "pi" as π, and z × z as z2, but you get the idea!)