One cubic foot of water weighs how many pounds?

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Multiple Choice

One cubic foot of water weighs how many pounds?

Weight per volume is determined by density. Water has a density of about 62.4 pounds per cubic foot. A cubic foot holds roughly 7.48 gallons, and each gallon weighs about 8.34 pounds. Multiplying 7.48 by 8.34 gives around 62.3 pounds, which rounds to about 62.5 pounds per cubic foot. So one cubic foot of water weighs roughly 62.5 pounds. The other numbers come from different units: 8.34 pounds is the weight of a gallon, not a cubic foot; 16 pounds would be about two gallons; 100 pounds is far too high for a cubic foot.

Weight per volume is determined by density. Water has a density of about 62.4 pounds per cubic foot. A cubic foot holds roughly 7.48 gallons, and each gallon weighs about 8.34 pounds. Multiplying 7.48 by 8.34 gives around 62.3 pounds, which rounds to about 62.5 pounds per cubic foot. So one cubic foot of water weighs roughly 62.5 pounds. The other numbers come from different units: 8.34 pounds is the weight of a gallon, not a cubic foot; 16 pounds would be about two gallons; 100 pounds is far too high for a cubic foot.

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