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MarineMercier
@MarineMercier
May 2019
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Bonsoir j’aurais besoin d’aide pour cet exercice de mathématiques s’il vous plaît c’est pour demain et j’en est vraiment besoin, merci de tout cœur
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Bonjour,
1) h cylindre : 5-1,7 = 3,30m
2) V = V cylindre, tu as les mesures, applique la formule de calcul du V d'un cylindre (r =0,85, h = 3,30)
V sphere = 4/3*pi*0,85² = ....
3) A = 2*pi*r*h+2*pi*r²
= 2*pi*0,85*5+ 2*pi*0,85²
= 2*3,14*0,85*5+ 2*3,14*0,7225
≈ 26,69+4,5373 ≈31,2m^2
nombre de litres nécessaires : 31,2/12 = 2,6L
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Bonjour,1) h cylindre : 5-1,7 = 3,30m
2) V = V cylindre, tu as les mesures, applique la formule de calcul du V d'un cylindre (r =0,85, h = 3,30)
V sphere = 4/3*pi*0,85² = ....
3) A = 2*pi*r*h+2*pi*r²
= 2*pi*0,85*5+ 2*pi*0,85²
= 2*3,14*0,85*5+ 2*3,14*0,7225
≈ 26,69+4,5373 ≈31,2m^2
nombre de litres nécessaires : 31,2/12 = 2,6L