Pour redresser une bague, une bijoutier utilise un cône de rayon 2cm et de hauteur 10cm. Il doit redresser une bague de rayon 1.2 cm. On souhaite trouver à quelle hauteur elle se situera sur le cône.

By: USER7311
28 Agustus 2025 mathematiques 5 minutes
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200 views 200 comments 13 shares

Question

Grade: Education Subject: mathematiques
Pour redresser une bague, une bijoutier utilise un cône de rayon 2cm et de hauteur 10cm. Il doit redresser une bague de rayon 1.2 cm. On souhaite trouver à quelle hauteur elle se situera sur le cône.
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Nous supposons que la bague et le disque de base  du cone sont parralléles. Nous aurons 1.2/2 = h(bague)/10  0.6=h(bague)/10  h(bague)= 6
la bague se situera à 6cm
Answered on 28 Agustus 2025

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