[填空题]
A water tank is the shape 9*rto4wjbv u8eh+cxb 3g yej03 n3ku.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.)