Bonsoir,
r = 4,5/2 = 2,25
Volume du cylindre:
3,14 * 2,25² * 3,5 =>55,64m³
volume 1/2 sphère:
(4pir³)/3
(4* 3,14 * 2,25³ )/3 => 47, 69m³
Total:
55,64 + 47,69 => 103m³