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richeztess
@richeztess
January 2021
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Bonjour, dm de mathématiques de 3eme Merci d'avance
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taalbabachir
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On doit chercher le volume de la pyramide : V = 1/3 x S x h = 1/3 x 231 x 231 x 146 = 2596902 m³
⇒ V = 2596902 m³
1 m³ de pierre calcaire pesant 2268 tonnes
Quelle a été la masse totale de pierre nécessaire à sa construction
2596902 m³ x 2268 t/1 m³ = 5889773736 tonnes
4) calculer la longueur d'un mur de 1 m de hauteur et de 20 cm de largeur
V1 = L x l x h = 2596902 ⇒ L = 2596902/(l x h) = 2596902/1 x 0.20 =
⇒ L = 12984510 m soit L ≈ 13000 km
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Verified answer
On doit chercher le volume de la pyramide : V = 1/3 x S x h = 1/3 x 231 x 231 x 146 = 2596902 m³⇒ V = 2596902 m³
1 m³ de pierre calcaire pesant 2268 tonnes
Quelle a été la masse totale de pierre nécessaire à sa construction
2596902 m³ x 2268 t/1 m³ = 5889773736 tonnes
4) calculer la longueur d'un mur de 1 m de hauteur et de 20 cm de largeur
V1 = L x l x h = 2596902 ⇒ L = 2596902/(l x h) = 2596902/1 x 0.20 =
⇒ L = 12984510 m soit L ≈ 13000 km