Réponses

2013-04-02T11:53:16+02:00

1er exercice

V = 1/3.pi.AO².SO

AO/5 = tg30° => AO = 5.V3/3

V = pi.125/9 m³

exercice 2.

BD = 35,4.V2 = 50,1m

tgSBO = 21,6/25,05 => SBO = 40,79 soit 41°

BSO = 90° - 41°= 49°

BSD = 2BSO = 98°