Jawabanmu

2014-05-30T08:04:03+07:00
V = p.l.t
385 = 11.5.3+x
385 = 165 + 55x
5x = 220
X = 4

t = 3 + X
= 3+4 =7

L = 2(p.l+p.t+l.t)
= 2(11.5+11.7+5.7)
= 2(55+77+35)
= 110+154+70
= 334