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Cubic feet requires Length X Width X Height. So your question does not have enough information. That's correct, but it's not hard to fix. First convert your measurements to the same unit, in this case feet. Multiply your length x width to get the 'surface area', then multiply the surface area by height to reach your 'volume' (your cubic foot measurement) As an example, let's figure this out first using a depth of 36 inches (3 feet) for the height: * 15 ft X 4 ft = 60 ft2 (or a surface area of 60 square feet) * 60 ft2 X 3 ft = 180 ft3 (or a volume (cubic area) of 180 cubic feet)

And then, (for the gardeners) we'll use a height of 8 inches (.67 feet): * 15 ft X 4 ft = 60 ft2 (or a surface area of 60 square feet) * 60 ft2 X .67 ft = 40.2 ft3 (or a volume of about 40 cubic feet)

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17y ago

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