0
Anonymous
25.30 (correct to 2 decimal placing)
The most elegant answer would be: 640 = 64*10 so SqRoot(640) = SqRoot(64)*SqRoot(10) = 8 * SqRoot(10) ----> Best answer
If you consider: SqRoot(10) = 3,16 Then: 8*3,16= 25,28
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25.3 (rounded)
8 radical 10
No because the square root of 640 is approximately... 25.2982212813, and possibly continues.
Cube root (640) = approx 8.6177
640 acres in a square mile.