Report copyright - Lampiran 1 : Gambar Denah. · Lebar ring balk = 0,15m Panjang ring balk = 85m Volume = (2 x 0,25 x 85) + (0,15 x 85) = 55,25m2. Tingkat produktivitas 1 m 2 0,330 orang −hari x 1
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