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It depends upon how thick you want the concrete. For example, if you want the concrete to be 6 inches thick, then you will need 200 cubic feet. There are 27 cubic feet per cubic yard; so divide the 200 cubic feet by 27 to get 7.4 cubic yards.

Q: How many yards of concrete will be needed to fill in 400 square feet?

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123.44 cubic yards

1350/depth of the concrete in feet

As long as you mean square yards, then: 1 square yard = 9 square feet 4077 square feet / 9 square feet per square yard = 453 square yards

divide by 9

You cannot "fill" a cubic measurement with a square measurement.I think you meant cubic yards.1 cubic yard = 27 cubic feet.Your concrete slab is 1600 x 4/12 cubic feet = 533.333333... cubic feet.533.333333... cubic feet / 27 = 19.753 cubic yards (rounded to third decimal).

Related questions

how may yards of concrete are needed for a floor 24 x 25 feet?

For 576 square feet at a depth of 4 inches, you will need 7.11 cubic yards.

How thick? Gotta have thickness to calculate cubic yards.

123.44 cubic yards

90

For a 4-inch depth you will need 7.41 cubic yards.

The answer depends on whether you mean 114 feet squared or a square 114 feet by 114 feet. The answer to the first scenario is 76 square yards of concrete. The answer to the second scenario is 8,664 square yards of concrete.

1000 square feet/9 = 111.1 square yards of concrete 6 inches thick. This is the same as 111.1/4.5 = 24.7 cubic yards of concrete.

1350/depth of the concrete in feet

One square yard is nine square feet, so 27 square feet is equivalent to 3 square yards. So 3 yards of concrete will cover 27 square feet.

As long as you mean square yards, then: 1 square yard = 9 square feet 4077 square feet / 9 square feet per square yard = 453 square yards

divide by 9