Two circles are concentric, and have radii of 15 and 25 respectively. If two arcs are formed by the same central angle, which of the following are possible arc lengths? Select the two correct answers.
30 and 40
50 and 80
3 and 5
45 and 75
60 and 90
1 answer
the arcs will have the same ratio as the radii: 3:5
2 answers