May 10th, 2009, 12:34 AM  #1 
Newbie Joined: Feb 2009 Posts: 18 Thanks: 0  Surface Integral
Evaluate the surface integral ??x^2+y^2 dS where ? is that portion of the plane z=4x+20 cut by the cylinder x^2+y^2=9 ? What I got is (81pi.sqaure root of 17)/2.Is that correct? 
May 10th, 2009, 05:21 AM  #2 
Senior Member Joined: Dec 2008 Posts: 251 Thanks: 0  Re: Surface Integral
Looks correct.


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integral, surface 
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