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2014-03-18T20:59:35+07:00
60 x 4 = 240 : 3 = 80 x 3 = 240 cm = 2,4 m

3 3 3
2014-03-18T22:30:27+07:00
N = tali semula
(1-1/3-(2/3×3/4))n = 60 cm
2/3-1/2 = 60n
1/6 = 60n
n = 360 cm
4 3 4