Respuesta :
Thank you, I need this, you genuinely helped this poor soul
Answer:
[tex]4 kilometers [/tex]
Step-by-step explanation:
[tex]1 \: lap \: = \: 400 \: meters\\ 10 \: laps = 4000 \: meters \\ 4000 \: meters = \: 4 \: kilometers[/tex]