I hope that the attachment helps you..
Answer:
the length is 18.4
Step-by-step explanation:
The one that has green, blue and yellow
Answer:
With the information provided, we have to assume it was Rob, in the order Rob, Henry, Charles, Dale.
However, we don't know if there were other people in the race that were not mentioned, so we can only say he came in first of those four people.