No question is posed.
If we presume you're interested in creating pie chart of medal distribution, the arc measure is proportional to the medal count. The sum of arc measures is 360°; the sum of medal counts is 35+39+29 = 103. Then the arc measures are
.. arc ADB = (35/103)*360° = 122.3°
.. arc BDC = (39/103)*360° = 136.3°
.. arc CDA = (29/103)*360° = 101.4°