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Mathematics, 13.10.2020 15:01 KaitlynLucas5132

1 Jeux de plage Georges a acheté un ballon gonflable en forme de
sphère pour ses enfants. Le diamètre de ce ballon
est de 30 cm.
a. Calcule le volume du ballon, arrondi au cm?.
Le diamètre de ce ballon mesure
donc le rayon du ballon est cm.
Le volume d'une boule est donné par la formule
Vpoule =
Ici Vpoule =
soit Vpoule =
cm?
D'où Vpoule
cm' (arrondi à l'unité).
b. À chaque expiration, Georges souffle 500 cm
d'air dans le ballon. Combien de fois devra-t-il
souffler pour le gonfler au maximum ?

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Answers: 3

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1 Jeux de plage Georges a acheté un ballon gonflable en forme de
sphère pour ses enfants. Le...

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