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Anonymous
Since no integer multiplied by itself can yield 111, it is not a perfect square. 121, however, is a perfect square. Its square root is 11.
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10.5356537528527388484014046619Root 111 = 10.53565375
512 is a not perfect square.
110 is a not perfect square.
40 is a not perfect square.
135 is a not perfect square.