About 3.3166247903554. (If you ever have any other square root questions, use this URL: http://www.math.com/students/calculators/source/square-root.htm)
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The square root of 121 is 11, because 11 x 11 = 121 * * * * * -11 is also a square root of 121.
Square root 11 = ± 3.316625
there is no square root of 11.
The square root of 121 is 11 and 11 plus 49 = 60
The square root of 121 is 11, and 11 is a rational number.