[填空题]
A water tank is the s/q 1q xuv1p)wf.mp(gkhape of a cubej0rn3v wpk n6: 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.)