How many sq. yds. of concrete will it take to cover 2400 sq. ft. at 4 inches thick?

To convert square feet to square yards, divide the area by 9 (since there are 9 square feet in a square yard). Therefore, 2400 sq. ft. is approximately 266.67 sq. yds. Since the thickness of the concrete does not affect the area coverage, it remains the same. Thus, it will take about 266.67 sq. yds. of concrete to cover 2400 sq. ft. at 4 inches thick.