Answer Happy

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 8 cubic feet per minute. The diameter of the base of the cone is approximately three times the altitude. At what rate (in ft/min) is the height of the pile changing when the pile is 2 feet high?
tác phát hàng PH một thanh mai ta lại đi xa thì sau 21 90 An một ai bin Hội PH dân phát t p C
At and great, and is offer and for the joh Bie The of the base of the ceremy ees the the height of the pleheng sheet high