[填空题]
A water tank is the sh0od6 +)9g nunhthj x*la 2nw(dki9vxp1pe of a 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.)