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France Circle Radius Population Challenge

Directions

The object of this quiz is to adjust each circle’s radius so it contains the target population shown at the right. When you click Start you will be shown a marker on a random populated France grid square (over 200K within France, courtesy of https://human-settlement.emergency.copernicus.eu/index.php). Also you will see an adjustable circle of radius 100 km to start. Adjust the circle’s radius by dragging it until it contains the target number of people shown – this target will be between 50K and 5 million people. Then click submit. You are scored on how close your circle’s population is to the target. Circle population is tallied by totaling all output areas within that circle.

NOTE – This quiz does NOT include any people in other countries, ONLY France.

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