[填空题]
A water tank is the s2aby*nd8by woi5b9 tnk 2(tbbs6 .iw3hape of a cube wit/-x sadxtc.k9h sides of $3.00 \mathrm{~m}$. Each side is measured with an uncertainty of $1.0 \%$. What is the absolute uncertainty in the volume of the tank? (please only input numerical value without units and without the $\pm$ symbol.)