Aire et Volume d’un Tronc de Cˆ
one (A)
Calculez l’aire et le volume de chaque tronc de cˆ
one.
Aire = π(r1+ r2) q (r1–r2)2+ h2+ πr12+ πr22 Volume = π 3h(r1 2 + r22+ r1r2) r1 = 77,60 m h = 78,80 m r2 = 55,40 m
1.
r1 = 119,61 nm h = 137,43 nm r2 = 25,38 nm2.
r1 = 49,64 cm h = 51,51 cm r2 = 22,10 cm3.
r1 = 123,83 hm h = 172,84 hm r2 = 55,39 hm4.
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Aire et Volume d’un Tronc de Cˆ
one (A) R´eponses
Calculez l’aire et le volume de chaque tronc de cˆ
one.
Aire = π(r1+ r2) q (r1–r2)2+ h2+ πr12+ πr22 Volume = π 3h(r1 2 + r22+ r1r2) r1 = 77,60 m h = 78,80 m r2 = 55,40 m