Jawabanmu

2014-03-16T17:15:50+07:00
K = 2(p+l) 144 = 2(2x+x) 144/2 = 3x 72 = 3x x = 72/3 = 24 panjang=2x=2.24=48 lebar=x=24 L = p.l = 48.24 = 1152 m2 = 11520000 cm2