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Verified answer
V balok = plt8×8×10 = 640 dm³
air yg sudah terisi
1/5×640 = 128dm³
air yg dibutuhkan
640-128= 512 liter
ps = dm³ = liter
V.balok = 8 × 8 × 10
V.balok = 640 dm³/ liter
V.balok = 640 liter
640-1/5 = 512 liter yg harus diisi penuh.