Question 548077
perimeter =42
width =w
length = 2w

42=2(w+2w)
42=6w
42/6=w
w=8
dimension 8 & 16
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width w
length =5w

Perimeter = 42
42=2(5w+w)
42=12w
w=3.5
length = 3.5*5= 17.5
dimensions 3.5 & 17.5