Mr. gilligan went to JD's deli to get breakfast. he got a JD Special for $3.75 and a coffee for $1.50. if he leaves an 18% tip,
2 answers:
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Parameterize the lateral face 
of the cylinder by
where
and 
, and parameterize the disks 
as
where
and 
.
The integral along the surface of the cylinder (with outward/positive orientation) is then
where
where
The integral along the surface of the cylinder (with outward/positive orientation) is then