4/3 because 3/3 is 1 and 4/3 is 1 1/3
Answer:
You either wrote it down wrong, or there's a graphic to go along with it that you didn't include. There is not enough information to answer this question, sorry.
Ross-multiplication.
circumference divided by the diameter
10/x = 580/185
10x185=1850
1850/580=3.189