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NooPseudo
@NooPseudo
June 2021
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Bonjour ,
J'ai un exercice de maths niveau 4ème mais je n'ai pas compris (je dois faire juste le b).
Merci d'avance.
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safinatoybou
Bonsoir
Volume cylindre = Pi * r² * h = Pi *(30)²*70 = 63 000 * Pi
Volume cône = 1/3 Volume cylindre = 63000 / 3 * Pi = 21 000 * Pi
Volume cylindre - Volume cône = 2/3 volume cylindre = 2/3 * 63000 * Pi = 42 000 * Pi
Volume cylindre - Volume cône = 131880 mm3
1 votes
Thanks 3
isapaul
Verified answer
Pour le b
la formule est 2 x pi x rayon x hauteur
alors 2x pi (3.14)x3x7 =environ si mais calcul sont bon 131.94
2 votes
Thanks 2
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Bonjour, voila jai un exercice pour demain mais je n'y arrive pas aidez moi svp :)
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Bonjour,j'ai un exercice de maths a faire pour demain.Aidez-moi svp :(
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Volume cylindre = Pi * r² * h = Pi *(30)²*70 = 63 000 * Pi
Volume cône = 1/3 Volume cylindre = 63000 / 3 * Pi = 21 000 * Pi
Volume cylindre - Volume cône = 2/3 volume cylindre = 2/3 * 63000 * Pi = 42 000 * Pi
Volume cylindre - Volume cône = 131880 mm3
Verified answer
Pour le bla formule est 2 x pi x rayon x hauteur
alors 2x pi (3.14)x3x7 =environ si mais calcul sont bon 131.94