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If your object is 11.3 feet by 8.7 feet then I have it on good authority that it is not square! It is a rectangle and we find the perimeter by adding the length to the width and then doubling the result.

Perimeter = 2(11.3 + 8.7) = 2 * 20 = 40 feet.

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12y ago
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Q: What is the perimeter of the square of 11.3ft by 8.7ft?
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