Hi ,I would appreciate some guidance on this .thanks.

Evaluate the flux of the vector field F=18zi-12j+3yk across that part of the plane 2x+3y+6z=12 which is located in the first octant of the plane 2x+3y+6z=12 .Use the unit normal to the plane that points in the positive z-direction .

So far I have found the normal to the plane ... as2i+3j+6k/7

I was intending on using the eqn Iintergral F n ds =

not sure what to do with ds=sqrt(...)

I am not sure from where to where I am integrating ...flux