[填空题]
A water tank is the shape of 7g4ixq -ym(9k/tghwu a cube wiy2ca4ah q+fxzctp ,z l6r:9i/ th 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.)