[填空题]
A water tank is the shape of a cube witp/ eremkp637u)vvza4 h sides b3y +wp ft d.up +:2n-rnxf-dbof $3.00 \mathrm{~m}$. 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.)