Réponses

2013-03-23T16:56:03+01:00

62

theoreme de pythagore

17² = h² + 8²

 h² = 17² - 8²

 h² = 289 - 64 = 225

 h = racine carré (225) = 15

 

Volume du cône =  π/3 x (Rayon)² x h = π/3 x (8)² x 15 = 1005 m^3

 

61

aire = ((l*L)*h)/3 = (15*10*20)/3 = 1000 cm^3

 

voila mam'zelle ;)