Bonjour;
1)
(12*8)/2 =>48cm²
2)
72*2 =144
144/16 =9 cm
3)
7,5*2 = 15
15/5 = 3cm
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Triangle 1: 12cm x 8cm = 96cm2
Triangle 2: 72cm2 / 16cm = 4,5cm
Triangle 3: 7,5cm2 / 5cm = 1,5
J’espère que ça t’aura aidé à comprendre ;-)
Bonjour;
1)
(12*8)/2 =>48cm²
2)
72*2 =144
144/16 =9 cm
3)
7,5*2 = 15
15/5 = 3cm