How many yards of concrete a floor will take if 12x6x4?

To calculate the volume of concrete needed for a floor measuring 12 feet long, 6 feet wide, and 4 inches thick, first convert the thickness to feet: 4 inches is 1/3 of a foot. The volume in cubic feet is then 12 x 6 x (1/3) = 24 cubic feet. To convert cubic feet to cubic yards, divide by 27 (since there are 27 cubic feet in a cubic yard): 24 / 27 ≈ 0.89 cubic yards. Therefore, approximately 0.89 cubic yards of concrete will be needed.