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Postal regulations specify that a parcel sent by priority mail may have a combined length and...

Postal regulations specify that a parcel sent by priority mail may have a combined length and girth of no more than 165 in. Find the dimensions of the cylindrical package of greatest volume that may be sent via priority mail. Hint: The length plus the girth is 2πr + l.

r= in

l= in

What is the volume of such a package? in in^3

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