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3. 1 hari = 24jam × 60menit
= 1.440menit
Volume air = 1.200liter × 1.440
= 1.728.000 liter/hari
4. Volume = 25liter/detik × 0,5menit(30detik)
= 750liter
5. Volume = 70cm × 40cm × 50cm
= 140.000cm kubik
= 140 liter