Bonjour,
triangle gauche
(3*2)/2 = 6/2 = 3
carré central:
3*3 = 9
Triangle droite:
(3* 4)/2 = 12/2 = 6
Total:
3+9+6 = > 18cm²
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Bonjour,
triangle gauche
(3*2)/2 = 6/2 = 3
carré central:
3*3 = 9
Triangle droite:
(3* 4)/2 = 12/2 = 6
Total:
3+9+6 = > 18cm²