1. rektangel, area=3584 & leng=64 . . . 2. go around 5 times . . . 3. speed=5 km/our . . . wide=3584/64=56 . . . leng+wide=64+56=120=half-rim . . . rim-leng=2*120=240 meters . . . 5 times around=5*240=1200 meter=1.2 km . . . time=distans/speed=1.2 km/(5km/our) . . . =0.24 our=14.4 minuts=864 sekonds