18
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sqrt(324) = ±1818the square root is 18
No. √324 = 18 = 18/1 = a rational number.
The negative square root of 324 is -18. In mathematics, the square root of a number is a value that, when multiplied by itself, gives the original number. Since the square root of 324 is 18, the negative square root would be -18.
72/4 = 18. Each side of the square is 18, so 18 x 18 = 324. 324 is the area.
A=Pi*r2 324=Pi*r2 r2=324/Pi r=√(324/Pi) r~=10.155 inches