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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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15y ago

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Q: What is Square root of 640?
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