[填空题]
A water tank is the shapeo7bwf:m ;ix*uvvc)v ( l o,,1- vixvui/pc3ao.f1kyo 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.)