The question

Suppose R is a closed region in the plane bounded by a closed non-self-intersecting, piecewise smooth plane curve . Prove that the area of R is given by

I'm unsure of how to solve this. Could someone guide me? Thanks.

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- Jun 3rd 2011, 09:07 PMGlitchGreen's theorem question?
**The question**

Suppose R is a closed region in the plane bounded by a closed non-self-intersecting, piecewise smooth plane curve . Prove that the area of R is given by

I'm unsure of how to solve this. Could someone guide me? Thanks. - Jun 3rd 2011, 09:12 PMTheEmptySet
- Jun 3rd 2011, 09:24 PMGlitch
Thanks, I didn't realise it was that simple. :)