Starting with basics a square number is a number multiplied by itself, so for example the square number of 3 is 3x3=9
So in this example the square number of 29 is 29x29= 841
If you mean the square root of 29, then the answer is 5.385 correct to 3 decimal places. We don't normally say "square number" - it's either square for 29 x 29 or square root for 5.385 x 5.385 = 29.
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