[填空题]
A water tank is the sha n5ap0*w 5;egjp3kwsnpe of at(wrsq 2 f8nu4y0oi0 m 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.)