How much concrete for 10'x25'x4?

To calculate the amount of concrete needed for a space measuring 10 feet by 25 feet by 4 feet, multiply the dimensions together: 10 ft x 25 ft x 4 ft = 1,000 cubic feet. Since concrete is typically measured in cubic yards, convert cubic feet to cubic yards by dividing by 27 (there are 27 cubic feet in a cubic yard). Thus, 1,000 cubic feet is approximately 37.04 cubic yards of concrete needed.