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Calcul de l'Angle ou de la Longueur d'un Arc de Cercle en Tenant Compte du Rayon (A)

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Angles et Longueurs d’un Arc de Cercle (A)

Nom:

Date:

Calculez la longueur de l’arc de cercle et la mesure de l’angle.

B A C ? 124,56 hm Rayon = 61 hm ̸ ABC = E D F ? 20,4 mm Rayon = 7 mm ̸ DEF = H G J 130° ? Rayon = 6 mm GJ = S R T 123° ? Rayon = 9 hm RT

=

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(2)

Angles et Longueurs d’un Arc de Cercle (A) Réponses

Nom:

Date:

Calculez la longueur de l’arc de cercle et la mesure de l’angle.

B A C ? 124,56 hm Rayon = 61 hm ̸ ABC = 61124,56×π×2 × 360 = 117° E D F ? 20,4 mm Rayon = 7 mm ̸ DEF =7×π×220,4 × 360 = 167° H G J 130° ? Rayon = 6 mm GJ = 130360× π × 6 × 2 = 13,61 mm S R T 123° ? Rayon = 9 hm RT

= 123 360 × π × 9 × 2 = 19,32 hm

MathsLibres.com

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