The only math problem I see here is finding the volume of the tube. What are the dimensions of the airtites? To me, a much more interesting question would be the arithmetic one of the cost of such a venture. And at the prices involved I would not be advertising my intentions on a public forum.
The airtight,s are 33MM to accommodate the 32.6MM 1OZ Gold Krugerrand and the Black surrounding ring have all my coins stored this way. as far as the advertising, i dont mind in the least bit i am insured with Smith and Wesson and lots of help from my Glock,s model #,s 20,23,36,37 among other close friends.