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1 km = 1,000 m = 100,000 cm = 1,000,000 mm

1 km^2 = 1,000,000,000,000 mm^2 or 10 ^12 mm^2

10.8 km^2 = 10.8 x 10 ^12 = 1.08 x 10^13 mm^2(10,800,000,000,000 mm^2)

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16y ago

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