This item gives working and formulae for calculating the optimum size of a sheet of material from which required no. of rings can be made.
This is my original work which has been used extensively while I was working in metal fabrication area and I had to decide best utilization of available material with minimum wastage.
A corollary to the working is also given at the end as an exercise for the students.
An MS-EXCEL sheet is also included which gives the calculations in real time for a given set of input data.
I also invite requests for items of similar nature.