Posted by **Amber** on Monday, April 4, 2011 at 9:28am.

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?

in

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