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Sagot :

d=H/10

E=4 X pi

G='(13pi)/8)Xh

 

2)1m80=180 cm donc

D=180/10=18

E=180 pi=565

G=(13pi/8)*180=918,9

 

3)

D=120/10=12

E=120pi=environ 377

g=(13pi/8)X120=47

 

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