Find $39,41,43,45,47.$ And $49$

Find the surface area of the surface described.

$39.$ The part of the plane $3x+2y+z=6$ that lies in the first octant.

$41.$ The part of the plane $x+2y+3z=1$ that lies inside the cylinder $x^2+y^2=3.$

$43.$ The graph of $z=\frac{2}{3}(x^{\frac{3}{2}}+y^{\frac{3}{2}}),$ where $0x1,0y1.$

$45.$ The part of the surface $z=xy$ that lies within the cylinder $x^2+y^2=1.$

$47.$ The part of the paraboloid $z=x^2+y^2$ that lies within the cylinder $x^2+y^2=16.$

$49.$ The surface with parametric equations $x=u^2,y=uv,z=\frac{1}{2}{v}^2,$ where $0u1$ and $0v2.$