[填空题]
A water tank is the shap sosex- 0hjp:(8ws8 h u(fyx+ve of a cube with s5vrxz h.5e 4bvides 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.)