5. Eric is a cycling athlete. Due to the country is plagued by the Covid-19 pandemic, centralised training has been cancelled. However, to maintain his momentum and stamina, his coach instructed him to cycle every day in his housing area. Diagram 2 shows the route used by Eric for cycling every day. 7 km Diagram 2 120° 0 4 km Given that the training route is a combination of two circular sectors with centre O. For each round, Eri will start at point A, then passes through points B, C, D and returns to point A by passing through point O. AOD is a straight line. Calculate the distance, in km, of each complete route of cycling travelled by Eric. Give the answer correct to 2 decimal places. [Use π = swer: 22 7 [3 marks]​