Answer: The Perimeter is 90 meters
Explanation:
Area = 126
Width = 3
Length = L
3 x L = 126
3 x L / 3 = 126/3
L = 42
Check:
3 x 42 = 126
126 = 126
Perimeter = L2 + W2
P = 42 x 2 + 3 x 2
P = 84 + 6
P = 90
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