Jawabanmu

2014-08-29T13:53:18+07:00
Vt = pi x r x r x t
  = 3,14 x 8 x 8 x 50
  = 10048 cm^3
vt2 = pi x r^2 x t
     = 3,14 x 64 x 15
     = 3014,4 cm^3

vb = 4/3 x 3,14 x 6^3
    = 12,56/3 x 216
    = 904,32 cm^2

10048 - 3014,4 - 904,32 = 6129,28