[填空题]
A water tank is the shapexir1n**bh+n z+ yloj2 of a cube with sides o5ox+l dn -.t sem(k*wqf $3.00 \mathrm{~m}$. 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.)