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Carine1303
@Carine1303
May 2019
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Bonjour Aidez moi pour l'exercice 14 Merci
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Bonjour ,
a)
On a :
BE = CF = 50 , et AB = 28 .
L'aire A1 = 28 * 50 = 1400 cm^2 .
b)
aire (CBEF) = 50 * 25 = 1250 cm^2 .
aire (ABC) = (28 * 15)/2 = 210 cm^2 .
l'aire latérale A2 = A1 + 2* (1250+210)
= 1400 + 2 * 1460
= 4320 cm^2 .
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a)
On a :
BE = CF = 50 , et AB = 28 .
L'aire A1 = 28 * 50 = 1400 cm^2 .
b)
aire (CBEF) = 50 * 25 = 1250 cm^2 .
aire (ABC) = (28 * 15)/2 = 210 cm^2 .
l'aire latérale A2 = A1 + 2* (1250+210)
= 1400 + 2 * 1460
= 4320 cm^2 .