Bonsoir,
a)
cube:
20*20*20 =>8 000 mm³
cylindre:
r = 15/2 = 7,5
3,14 * 7,5² * 25 =>4 415, 625mm³
Total:
8 000+ 4 415,625 => 12415, 625 mm³
b)
volume base:
80cm = 0,8m
1* 1,20*0,8 =>0,96 m³
1,10- 0,8 => h= 0,3m
( 1* 0,3 * 1,20)/2 =>0,18m³
Total:
0,96+0,18 =>1,14m³
