[填空题]
A water tank is the u-n42mm yj zw(/0pe9yc6 x cp4 xhy3hjshape of a 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? (Give your answer without a unit and to 2 significant figures)