There are 2.54 cm in one inch or 25.4 mm in one inch or (25.4)2 mm2 in 1 sq..inch. There are 144 square inches in a square foot, therefore there are (25.4)2 x 144 square mm in one square foot. This is 92,903 mm2
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1 sq foot = 92903 sq mm.
304.8 mm
10,000 mm square
5.3 square meters = 5,300,000 square mm
2.48 square meters equates to 2,480,000 square mm