the rotor or the small calculator

Fill all Radius in cm, with range [minimum .. maximum ] and push "Calculate".
To print it go to your browsers drop down "File" menu and select the "Print.." menu.

OuterRadius in cm [1 .. 1000]
InnerRadius in cm [0 .. 1000]
InsideRadius in cm [1 .. 5999]
NumberOfCells [4 .. 500]