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Verified answer
Volume= s × s × s
= 7 × 7 × 7
= 343 dm3 = 343 liter
Air yg perlu ditambahkan
= 343 liter - 320 liter
= 23 liter
= s^3
= (7 dm)^3
= 343 dm^3
= 343 L
Air yang perlu ditambahkan
= 343 L - 320 L
= 23 L