Concrete can be purchased by the cubic yard. How much will it cost to pour a slab 17 feet by 17 feet by 2 inches for a patio if the concrete costs $40.00 per cubic yard?

Convert the thickness to feet: 2 inches = 1/6 foot. The slab’s volume is 17 × 17 × 1/6 = 48.17 cubic feet, or 48.17 ÷ 27 ≈ 1.784 cubic yards. At $40 per cubic yard, the cost is 1.784 × $40 ≈ $71.36, so the answer is $71.36.

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