Electric flux through one face of the cube.

musicman05
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A point charge Q = 5.00 µC is located at the center of a cube of side L= 0.120 m. In addition, six other identical point charges having q = -0.50 µC are positioned symmetrically around Q, as shown in Figure P24.19. Determine the electric flux through one face of the cube.
 
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Okay, so what have you done so far?
 
Use Gauss's law and the symmetry of a cube.
 
same sort of question, is L not needed for the calculation?
can someone check my work,
Q=5.17 uC
q=-1.10 uC
L= 0.124 m
Qnet=Q+(1/6)q
flux=Qnet/epsilon
per side=flux/6
26900 N*m^2/C?
 

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