[填空题]
A water tank is the shape of a cube witc -)r f2mvwgz;hahl8i;jv4gz72 7wcr xec b *o- 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.)