Question 369293
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3w-2=l
 
perimeter=2(l+w)
2([3w-2]+w)
2(3w-2+w)
2(4w-2)
8w-4
 
perimeter=68
8w-4=68
8w=72
w=9
 
3w-2=l
3(9)-2=l
27-2=l
25=l
l=25
 
So the length is 25.