How many cubic feet is 18 x 18 x 15?

Answer 1

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)

Answer 2

If it's a rectangular area, then 15'x20'x4":

4" = 1/3', so:

= 15'x20'x1/3'

=5'x20' square

=100' cubic

Answer 3

10 ft * 15 ft * 8 ft = 1200 cubic feet

Answer 4

That is 4,186 cubic ft.