Jawabanmu

2014-06-05T04:37:36+07:00
V = 1/3 . La . t
480 = 1/3 . 1/2 . 12 . 16 . t
480 = 4 . 8 . t
t = 15
jawaban: 15 cm
2014-06-05T05:26:39+07:00
V=1/3 X (1/2 X P X L) X t
480= 1/3 x (1/2 x 12 x 16) x t
480= 1/3 x (6 x 16) x t
480= 1/3 x 96 x t
480= 32 x t
t = 480/32
  = 15