From the question, we are informed that a motor racing curcuit has length of 5 5/6 miles and a straight section of the curcuit has length of 1 1/4 miles.
To calculate the fraction of the curcuit that is the straight section m, we divide 1 1/4 miles by 5 5/6 miles. We need do convert the fractions to improper fraction first. This will be:
2 US cities that reference something circular are: Circle City, Arizona and R<span>ound Rock, Texas. I hope this helps you and answers your question. Have a great day/night!</span>