The formula of electric flux is:
electric flux = electric field surface area
The surface area of a sphere is given by: 4pir^2
Therefore: 4 3.14 12^2 is equal to 1808.64 cm^2, convert are to m^2
1808.64 cm^2 (1 m/ 100 cm)^2 = 0.1808 m^2
The point charge is +5μC, convert this to electric field with units of V/m
then solve for the electric flux by multiplying the electric field with the surface area.