Finding error of finite element method

Hello,
I would like to triangulate a basic shape(like circle or square) which is written in equation form. And then I should calculate area each triangle(each mesh) and find exact area of basic shape. Then I want to find error by number of nodes.
Thank you from now for your advice.

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Asked:

on 18 Oct 2019

Closed:

on 18 Oct 2019

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