[填空题]
A water tank is the shape of avm2.); dbg2fbwfy q m r 1/ireg7h,n1d cube wi) v nrt6f*dv9crd bksox/2j0:th 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.)