Réponse :
Bonjour,
B1=b*h/2 = 13*5:2=13*2,5=32,5 cm^2
V1 = B*H/2 = 13*11/2 = 32,5*5,5 =178,75 cm^3
B2=b*h/2= 12,2*10/2= 12,5*5=62,5 cm^2
V2 = B*H/2 = 12,5*15/2 = 62,5*7,5=468,75 cm^3
B3= b*h/2 =7*3/2= 7*1,5=10,5cm^2
V3 = B*H/2 =10,5*21/2= 10,5*10,5=110,25 cm^3
B4= b*h/2 =12*12/2=12*6=72 cm^2
V4 = B*H/2 =72*3/2= 72*1,5=108 cm^3
Explications étape par étape
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Réponse :
Bonjour,
B1=b*h/2 = 13*5:2=13*2,5=32,5 cm^2
V1 = B*H/2 = 13*11/2 = 32,5*5,5 =178,75 cm^3
B2=b*h/2= 12,2*10/2= 12,5*5=62,5 cm^2
V2 = B*H/2 = 12,5*15/2 = 62,5*7,5=468,75 cm^3
B3= b*h/2 =7*3/2= 7*1,5=10,5cm^2
V3 = B*H/2 =10,5*21/2= 10,5*10,5=110,25 cm^3
B4= b*h/2 =12*12/2=12*6=72 cm^2
V4 = B*H/2 =72*3/2= 72*1,5=108 cm^3
Explications étape par étape