Explanation:
Perimeter = 36
length = x - 2
Perimeter of a square = 4 × length
36 = 4(x - 2)
dividing through by 4:
9 = x - 2
hence:
x = 9 + 2 = 11.
Answer:
11
36/4 = 9
9 = x-2
x = 11
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