Réponses

2013-05-08T20:20:37+02:00

V32 = 5,65

V8 = 2,82

 

5,65+2,82 = 8,48

 

V72 = 8,48

2013-05-08T20:20:51+02:00

V32  = V2 x 2²x 2² + V2x2² = 4V2+ 2V2 =6V2

V 72 = V2x6² = 6V2