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7.071 and 7.072 [ square root of 49 ] and [ square root of 51 ]
Deductive reasoning. Trial and error. The square root of 49 is 7. The square root of 50 will be a little more than that. The answer is roughly 7.071
50√10
Since 50 contains no perfect square among its factors, you can't simplify the root of 50.
√49 < √50 < √64 7 < √50 < 8 (we are talking about the principal square roots)