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Sagot :

bonjour,

1

quotient L/l

1ere colonne = 32/18=16/9

2eme colonne=36/27=(3x12)/(3x9)=12/9=(4x3)/(3x3) = 4/3

3eme colonne =60/45=(5x12)/(5x9)=12/9=4/3

puis 80/45=(5x16)/(5x9)=16/9 et 128/72=(4x32)/(4x18)=32/18=16/9

2

16/9 = L/54 ; L=16/9x54 = 96 cm

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