Annulus approximations
- Author:
- David Taub
This activity allows you to explore the accuracy of a common method for approximating the area of an annulus.
Can you figure out where the method comes from? When is it a good enough approximation?
Metal piping has the shape of an annulus in cross section. If metal pipe has an inner diameter of 200 mm and is 2 mm thick, how good is the approximation?