Speed: 71 meters per minute
time: 4 hours and 35 minutes
First, express the time in minutes:
Since 1 hour = 60 minutes
4 hours = 4 x60 = 240 min +60 min = 300 minutes
Time = 300 minutes
Distance: Speed x time
Distance: 71 meter/min x 300 min = 71 x 300 = 21,300 meters