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There is no single answer to that

The rectangle could be 0.9 by 1, giving a perimeter of 2x(0.9+1)=3.8

Or it could be 0.45 by 2, giving it a perimeter of 2x(0.45+2)=4.9

The minimum perimeter is when it is a square. The square root of 0.9 is approx 0.94868, so the perimeter would be approx 3.7947

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14y ago

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