[填空题]
A water tank is the shape of i wi1z 9kq/g6kgo5c;s t1n;duhn1 p.w;o, za1v ughd 6a cube with 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.)