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V. Balok= p.l.t
648 cm^3= 9x6xt
648 = 54t
648/54 = t
12 cm = t
P:L:T = 9:6:12 = 3:2:4(d)
Semoga membantu
panjang x lebar x tinggi=468
panjang=9
9 x 6 x X= 468
X= 9
panjang:tinggi=9:9=1:1=3:3
perbandingan= 3:2:3