balok dengan p=8 l=3 t=3

dik, p = 8
l = 3
t = 3
V = p x l x t
V = 8 x 3 x 3
V = 72

L = 2(pl + pt + lt)
L = 2( 8 . 3 + 8 . 3 + 3 . 3)
L = 2(24 + 24 + 9)
L = 2 x 57
L = 114