' Send taiis. item a conveyor belt at a rate oi 13 m3! min The height is changing at a rate of [:1 cm/min 5% onto the top of a conical pile? The height of the pile is when the height is 7 m. F always threee'ighths of the base diameter. How fast are (Type an exact answer, using it as needed.) L 2 the height and the radius changing when the pile is 7, m 1' high? Answer in centimeters per minute. ,7