How many bags of concrete needed for 24' X 30' X 6 slab?

To calculate the number of bags of concrete needed for a slab measuring 24' x 30' x 6", first determine the volume of the slab in cubic feet. The volume is 24 x 30 x 0.5 = 360 cubic feet. If using standard 80-pound bags of concrete, which yield about 0.6 cubic feet per bag, you would need approximately 600 bags (360 ÷ 0.6 = 600).