Speaking

= 1. Presentations =

media type="custom" key="12325748"

= 1.Ruben = media type="custom" key="13207802"

=π ≈ 3,14159265358979323846. **aadrii** = media type="custom" key="13388026" =media type="custom" key="h13385064"=

=4. Victor= media type="custom" key="13387862"