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29 dm = 2,9 m
12 + 0,67 = 12,67
9 + 2,9 = 11,9
selisih = 12,67 - 11,9
= 0,77 m
Lebar = 9m + 29 dm = 9m + 2,9m = 11,9m
Selisih = p - l = 12,67m - 11,9m = 0,77m