How far have these students walked by the time the teacher's car
reaches them after their bus broke down?
If you have only 40 metres of fencing available, what is the maximum area of land you can fence off?
Experiment with the interactivity of "rolling" regular polygons, and explore how the different positions of the red dot affects the distance it travels at each stage.
Can you now work out what produced the following speed / time
The rolling polygon had a radius of 30.
Can you work out how many sides it had and where the red dot was
Try to explain how you worked it out.