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| Math Central | Quandaries & Queries |
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Question from Judy: Have an area 731 sq. ft with 5" of water all the way around. How many gallons is this? Your help is appreciated. |
Hi Judy.
Gallons is a measurement of volume, which you get when you multiply an area by a length. Let's first convert 5 inches to (5/12) of one foot. We convert to feet so that we will get a volume in cubic feet.
731 feet2 x (5/12 feet) = 304.58 feet3.
When I look up the conversion factor for cubic feet into gallons, I find it is 7.481 US gallons (if you are in part of the world that uses the larger imperial gallons, you would use 6.229 instead). So I can multiply:
304.58 feet3 x (7.481 US gallons / foot3) = 2279 US gallons.
Hope this helps,
Stephen La Rocque.
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