The square root of 640 is: ± 25.298221
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sqrt(640) = sqrt(64*10) = sqrt(64)*sqrt(10) = 8*sqrt(10)
There are 640 acres in 1 square mile.
640 acres in a square miles
For a pair of numbers, the answer is the complex conjugate pair: 12.5 ± 21.9943 i where i is the imaginary square root of -1.
There are 640 acres in one square mile. Therefore, 3200 square miles is equal to 3200 x 640 = 2048000 acres.