Finding an area of the portion of a plane? I need help with a problem I got in class today any help would be appreciated!
Find the area of the portion of the portion of the plane $6x+4y+3z=12$ that passes through the first octant where $x, y$, and $z$ are all positive..
I graphed this plane and got all the vertices but I am not sure how my teacher wants us to approach this problem..
Do I calculate the line integral of each side of the triangle separately and add them together? because we are on the section of line integrals, flux, Green's theorem, etc.. 

If you have the three vertices, you can calculate the length of the three sides and use Heron's formula
