posted by Amber on .
Postal regulations specify that a package sent by priority mail may have a combined length and girth of no more than 129 in. Find the dimensions of a cylindrical package with the greatest volume that may be sent by priority mail. Hint: The length plus the girth is 2πr + l. (Round your answers to three decimal places.)
r = in
l = in
What is the volume of such a package?