Aire d'un disque par découpage et puzzle

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[size=150]Inspiré de la ressource [url=https://www.geogebra.org/m/wQZ22vMt]Aire d'un disque[/url] de [url=https://www.geogebra.org/u/julien+hannon]Julien Hannon[br][/url].[/size]

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