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The square root of 72 is an irrational number and there is no such thing as a best approximation for any irrational number. By definition, all Irrational Numbers are represented by infinitely long decimal strings and it is always possible to improve the approximation by calculating the value to one more decimal place.

8.48528 should be sufficiently accurate for most purposes.

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Wiki User

12y ago

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More answers

8.4 and 8.5

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Chandler Avant

Lvl 2
4y ago
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8.9

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Anonymous

4y ago
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Anonymous

4y ago
lol its 8.5

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Q: What is the best approximation for the square root of 72?
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