How much concrete is required to pour 14 circular piers, 20" in diameter, and 18" deep?

A) .93 cubic yards B) 1.68 cubic yards C) 1.24 cubic yards D) 1.56 cubic yards


D

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What drain-cleaning device would be a good choice for a contractor who wants a low-cost device for only occasional use?

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Which of the following is used to drop the pressure of the refrigerant before it enters the evaporator?

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