The question is from checkpoint book 11-14 from section 4, chapter 19, Shape, Space and measures. Question number 8
A ferris wheel, centre O, has a diameter of 10m and carries eight equally spaced carriages for children to sit in. The carriages are numbered from 1-8.
I've query regarding a subquestion...
(c) the shortest distance between carriages 1 and 4.
I saw checkpoint answer sheets, answer is 9.2m.
Any help regarding above is really appreaciated.