Question 591056
Mrs. McKage encloses her rectangular garden, whose width is 57 feet, with 292 of chain link fencing. What is the length of her garden?

I don't know how to  get the equation I only have some info.

57 feet
292 of chain link fencing ?
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Perimeter = 2W + 2L
292 = 2W + 2L
146 = W + L
146 = 57 + L
L = 89 feet