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Kaloo
@Kaloo
April 2019
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Urgent!!!!!!!!!!!!!!!!!. Pour Aujourd'hui SVP
: on augmente de 12% la longueur des cotés d'un carré. Quel est le pourcentage d'augmentation de l'aire de ce carré. Merci de L'aide ;)
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Verified answer
c= x
A = x
²
c = x+(x*12/100)
c= (100x + 12x)/100
c = 1,12x
A1 = 1,12x*1,12x
A1 = 1,2544x
²
Augmentation =
1,2544x
²
- x
²
= 0,2544x
²
Pourcentage d'augmentation =
0,2544x
²
/ x
²
= 0,2544 = 25,44%
2 votes
Thanks 2
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Urgent : On augmente la longueur d'un rectangle de 15% et l'on diminue sa largeur de 15%. Que se passe t il pour l'aire de ce rectangle.
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Verified answer
c= xA = x²
c = x+(x*12/100)
c= (100x + 12x)/100
c = 1,12x
A1 = 1,12x*1,12x
A1 = 1,2544x²
Augmentation =
1,2544x² - x² = 0,2544x²
Pourcentage d'augmentation =
0,2544x² / x² = 0,2544 = 25,44%