Electrostatics

A cubical Gaussian surface has side of length \(a=10 \mathrm{~cm}\). Electric field lines are parallel to \(X\)-axis as shown in figure. The magnitudes of electric fields through surfaces \(A B C D\) and \(E F G H\) are \(6 ~\mathrm{kNC}^{-1}\) and \(9 \mathrm{~kNC}^{-1}\) respectively. Then, the total charge enclosed by the cube is

[Take, \(\varepsilon_0=9 \times 10^{-12} \mathrm{~Fm}^{-1}\) ]