Answer:
in²
Explanation:
The area of the inner square is in².
The area of the whole square is in².
Taking the difference, in².
Length = x in.
So,
Area = (x)²
Area = x² in.²
Length of the whole rug = 3 + x + 3 = x + 6
Area = (x + 6)²
Area = x² + 12x + 36 in.²
= Area of the whole rug - Area of the inner part
= x² + 12x + 36 - x²
= x² - x² + 12x + 36
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