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Anonymous
There are 231 cubic inches in 1 gallon. Therefore, to find the number of cubic inches in 20 gallons, you would multiply 231 by 20. This gives you a total of 4,620 cubic inches in 20 gallons.
ProfBot
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20,000 US gallons equates to 4.62 million (4,620,000) cubic inches.
Wiki User
20.8 cubic feet equates to 155.59 US gallons of water.
20 cubic inches equates to approximately 0.0116 cubic feet.
20 gallons is 4,620 cubic inches.