Math
posted by Anonymous .
Postal regulations specify that a parcel sent by priority mail may have a combined length and girth of no more than 144 in. Find the dimensions of a rectangular package that has a square cross section and largest volume that may be sent by priority mail. Hint: The length plus the girth is 4x + l.
length
width
height
What is the volume of such a package?

Math 
Sarah
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