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Rotunda West

Act 1

A map is shown of an area with a ring road, and also a road running across the diameter of the ring road. Two routes are shown; one going around the circle, the second using a combination of arcs and going across the diameter. Which is the shorter path?

Act 2

Additional photographs are given; one showing the diameter of the circle, on with just dots for the start and end points, and one with no route marked.

Act 3

The answer is revealed in a video with animated dots, travelling at the same speed, making the two journeys. The route using a combination of arcs and the diameter is the fastest route.​

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