(a) Find the surface area of the torus given by
,78.96
\int S,r(u,v)=(2 cosu)cosvi (2 cosu)sinvj sinuk
where the domain
D
is given by
0<=u<=2\pi
and
0<=v<=2\pi
. (b) Evaluate the surface integral
\int_S \int (x z)dS
where
S
is the first-octant portion of the cylinder
y^(2) z^(2)=9
between
x=0
and
x=4
. (c) Let
Q
be the solid region bounded by the coordinate planes and the plane
2x 2y z=6
, and let
F=\xi y^(2)j zk
. Find
\int_S \int F*NdS
where
S
is the surface of
Q
. [8, 9, 8]