Athlete runs twice round the circular athletics track. The track has a total length of 320 m and a diameter of 100 m. Make a scale drawing of the track. Use a scale of 1 cm represents 10 m. Taking the start as point 1, find both the athlete's distance and displacement at points 1, 2, 3 and 4, relative to the start, for both laps that he completes. Write down the athlete's exact displacement when he passes point 3 on the track.
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