SOLUTION: if the perimeter of the lid is 56inches what is missing sid length

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Question 1082434: if the perimeter of the lid is 56inches what is missing sid length
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You cannot calculate lengths that make up a perimeter without knowing at least one of the sides or a relationship between them.
It's not a circular lid, is it?
Please clarify and repost.