On the round dining table with a diameter of 2 meters and a height of 1 meter, a square tablecloth is laid. The four corners of the tablecloth just touch the ground. The area of this tablecloth is () square meter.
Diagonal length 2 + 1 + 1 = 4m
4 △ 2 = 2m
Area 2x2 △ 2x4 = 8 square meters
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