Final answer:
To pour the driveway, you need approximately 8.89 cubic yards of concrete, calculated by converting the dimensions to yards and then multiplying the length, width, and thickness together.
Step-by-step explanation:
To determine how many yards of concrete are needed to pour a driveway that measures 24 feet in width, 30 feet in length, and 4 inches in thickness, we need to calculate the volume of the driveway in cubic yards because concrete is usually measured in cubic yards for large projects.
First, we convert all measurements to the same unit. Since there are 3 feet in 1 yard and 12 inches in 1 foot, the thickness in yards is 4 inches ÷ 12 inches/foot ÷ 3 feet/yard = 1/9 yard. Now, we calculate the volume in cubic yards:
Volume = Width × Length × Thickness
= 24 feet/3 feet/yard × 30 feet/3 feet/yard × 1/9 yard
= 8 yards × 10 yards × 1/9 yard
= 80/9 cubic yards
≈ 8.89 cubic yards (rounded to two decimal places).
To pour the driveway, approximately 8.89 cubic yards of concrete are required. A concrete supplier will typically round this up to the nearest quarter yard, so you might order 9 cubic yards.