cu ft = sq ft x ft =216 x 1/3 = 72, so cu yds= 72/33 =8/3
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Apples and oranges. Without knowing how thick the 450 sq. ft. area is or how thick you want it to be you can't convert to cubic yards. A cubic yard has 27 cubic feet. One square foot 3 inches thick would be 1/4 cubic feet. 4 sq. ft. 3 inches thick would be 1 cubic foot. 450 sq. ft. 3 inches thick is 112 1/2 cubic feet or just a bit over 4 cubic yards. 450 sq. ft. 4 inches thick is 150 cubic feet or 5 1/2 cubic yards.
I think you mean 6 inches thick, not 6 feet thick. You would need 200 cubic feet, or 7.4 cubic yards.
Well, darling, to calculate the number of cubic yards in 1100 square feet at 4 inches thick, you first convert the thickness to feet (4 inches = 0.33 feet). Then you multiply the square footage by the thickness in feet to get the volume in cubic feet (1100 sqft * 0.33 ft = 363 cubic feet). Finally, you convert cubic feet to cubic yards by dividing by 27 (363 cubic feet / 27 = 13.44 cubic yards). So, there you have it, honey, 1100 square feet at 4 inches thick is equivalent to 13.44 cubic yards.
1 cubic yard = 27 cubic feet700 square feet x 1/2 foot = 350 cubic feet = 1226/27 cubic yards(12.963 cubic yards, rounded)
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.