# Papuss's Theorem for Surface Areas

1. Mar 15, 2010

### Larrytsai

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. Mar 16, 2010

### LCKurtz

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