Puzzle Solution

This question was taken from the Y8 Checkpoint set 7: Perimeter, Area and Volume.

Answers

Shortest to longest: Alex and Dave equally shortest, Brian, Colin. Students’ justifications will vary, and offer some insight into their understanding of the relationships between key measures in a circle.

? Answers will vary. It is hoped that they recognise that the curved lengths are longer than the straight lengths, but that the journey is not twice as far. A reasonable estimate would be one-and-a-half times as long.