Answer: The maximum length that can be used is 56 inches.
Step-by-step explanation:
Since we have given that
Width of package = 14 inch
Height of package = 12 inch
Let the length of package be 'l'.
Combined length and girth i.e. distance around = 108 inches.
So, According to question, we get that
[tex]l+2(w+h)=108\\\\l+2(14+12)=108\\\\l+2\times 26=108\\\\l+52=108\\\\l=108-52\\\\l=56\ inches[/tex]
Hence, the maximum length that can be used is 56 inches.