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2) inscribe 6 equilateral triangles.

3) count the sides close to the circumference and you get 6 and divide this be 2 for the first approximation. it equals 3

4) divide a 60 degree segment in half and draw the 2 new chords. compute the length of the chords.

5) add the 12 chords and divide by 2 to get 3.105 for the 2nd approximation

6) Divide the 1/12 chords in half and compute the new chord length.

7 compute the total chord length of the 24 chords and divide in half for the 3rd approximation.

etc