Answer:
front? uh I don't know...
Where exactly are the questions, and how do I even access your questions on your page it doesn’t give me the option to.
Answer:

Explanation:
Total distance of one lap of the marathon = 42.2 km
Distance of the lap that is inside the stadium = 400 m
The distance that is run outside the stadium is the difference between the two distances

The distance that is run on the road outside is
..