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Μετρηση του μηκους του κυκλου
Μετακινηστε τους δρομείς. Ποιά είναι η τελική τιμή του λόγου λ;
1)Τι εκφράζει ο λόγος λ;2) Η τιμή του λ εξαρτάται από την ακτίνα του κύκλου;