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LindaLicornes
@LindaLicornes
May 2019
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Bonjour s'il vous plait aidez moi pour l'exercice 32 le a/ et le c/
merci beaucoup d'avance!!
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Verified answer
Bonjour,
a) volume d'une pyramide = aire de la base × hauteur ÷ 3
(aire d'un rectangle = Longueur × largeur)
c) volume d'un cône = aire de la base × hauteur ÷ 3
(aire d'un disque = π × rayon²)
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abricot84
Bonjour
a) volume de la pyramide
4.2 * 3.5 * 6.3 / 3 = 30.87 cm³ = 30870 mm³
b) volume cône de révolution 1.5 dm = 15 cm
pi * R² * H / 3
3.14 * 8² * 15 / 3
3.14 * 64 * 15 /3
= 3014.4/3
= 1004.8 cm³
1 votes
Thanks 0
abricot84
exact
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Bonjour, merci de bien vouloir me donner votre aide, car je cale sur ces deux exercices de mon dm. Merci d'avance.
Responda
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Verified answer
Bonjour,a) volume d'une pyramide = aire de la base × hauteur ÷ 3
(aire d'un rectangle = Longueur × largeur)
c) volume d'un cône = aire de la base × hauteur ÷ 3
(aire d'un disque = π × rayon²)
a) volume de la pyramide
4.2 * 3.5 * 6.3 / 3 = 30.87 cm³ = 30870 mm³
b) volume cône de révolution 1.5 dm = 15 cm
pi * R² * H / 3
3.14 * 8² * 15 / 3
3.14 * 64 * 15 /3
= 3014.4/3
= 1004.8 cm³