Find the surface area of the indicated surface.

1.) The Portion of z=4y+ 3x^2, between y=2x, y=0 , and x=2

2.) The Portion of z= x^2 + y^2, below z=4 .

3.) The portion of z= sqrt(x^2 +y^2) between y=x^2 and y=4.

4.) The portion of 2x+y+z=8 in the first octant.

Any help with these would be epic/