1, 4, 9, 16, 25, 36, 49, 64, 81, 100
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That's an infinite list.
1 square nanometer = (10-9 m x 10-9 m) = 10-18 square meter 1 square decimeter = (10-1 m x 10-1 m) = 10-2 square meter (1 square decimeter) / (1 square nanometer) = 10-2 / 10-18 = 1016 = 10 quadrillion
There are 10 times 10 = 100 square feet
10 square meters = about 107.64 square feet.
1,440 square inches are in 10 square feet.