a 54" diameter drilled shaft is being poured using a pump truck with a 50' discharge hose that is 5' in diameter. Capacity inside the pump truck itself is .75 cubic yard. The distance between the top of the temporary casing and the tip of elevation is 54'. concrete is being delivered at 8 cubic yards per load. you measure the height of the concrete in the shaft between the second and third trucks. At the time of measuring, what is the actual volume of concrete in the hole.
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