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The old cane factory chimney

Posted by on 10 février 2014

The pupils of  4D are expected to measure the old chimney of the cane factory.

But how can they work it out ????

« The answer lies in trigonometry » says Sherlock Holmes

[youtube]http://www.youtube.com/watch?v=b8FiS29Ruuo&playnext=1&list=PL6A41FDE700420139&feature=results_video[/youtube]

click here to get more clues     the musgrave ritual

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