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The square root of 16 is ±4 which is the rational number ±(4/1)
0.16
It is: 4 or -4
The square root of a number is the number times itself. e.g. the square root of 4 would be 16, because 4x4 is sixteen. The square root of 5 is 25 because 5x5 is 25.
4 Square Root of Sixteen