well the square root of 16 is 4. look: 42 = 16 because 4 X 4 = 16. just put any number under the square root sign. (it looks like a division sign except it's like a check mark and a division sign put together) so put your number under there and you got the square root of a number
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Press the square root button on your calculator.
The square root of 1225 is 35.
square root(105) = 10.2469508
The square root of 8649 is 93.
The square root of 289 is ± 17.