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2014-05-25T18:16:30+07:00
4 x 20 = 80 cm
4 x 18 = 72 cm
4 x 7 = 28 cm
80+72+28= 180 cm
2 m = 200 cm
200-180=20
jadi sisa kawatnya 20 cm
1 5 1
2014-05-25T18:21:01+07:00
4 ( p + l + t )
4 ( 20 + 18 + 7 )
4 ( 45 )
180 cm
sisa kawat : 2 m = 200 cm
                         = 200 - 180 = 20 cm = 0,2 m