Electrostatics: JEE Main 2025 Physics question

The electric field in a region is given by $\vec E=\left(2\hat i+4\hat j+6\hat k\right)\times10^3$ N/C. The flux of the field through a rectangular surface parallel to $x$-$z$ plane is 6.0 $\mathrm{Nm^2C^{-1}}$. The area of the surface is ______ $\mathrm{cm^2}$.