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Homework Help: Papuss's Theorem for Surface Areas

  1. Mar 15, 2010 #1
    y=sqrt(2x+1), 0≤x≤2

    Find the area of the surface by using the second theorem of Pappus.

    S= 2pie(row)L

    I cannot find what the centroid is, i have length as 2
  2. jcsd
  3. Mar 16, 2010 #2


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    Find the area of what surface? A graph in the xy plane is not a surface. And your arc length isn't correct.
    Last edited: Mar 16, 2010
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