[填空题]
A water tank is the shape of a cub vr;j*a0 7 jacykn /xxl6hp9r0eih rw6 uia ./wpi/.mgg93yqwu8 yfd(, 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.)