# geometry

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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 of the concrete cost \$ 40 per cubic yard

• geometry -

17 * 17 * 1/6 = 48.167 ft^3

1 yd^3 = 3*3*3 = 27 ft^3

48.167 ft^3/27 ft^3/yd^3 = 1.784 yd^3

1.784 yd^3 * \$ 40/ yd^3 = \$ 71.36

by the way, concrete people refer to a cubic yard as a "yard".
They are not likely to send a truck with 1.784 yards, so you will pay for 2 yards or \$ 80

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