[填空题]
A water tank is the shapho:h 9/l: qkys-yn y e:wxo 0z;-zxb; patla()e 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? (please only input numerical value without units and without the $\pm$ symbol.)