Sand falls from a conveyor belt at a rate of 9 m" /min onto The height is changing at a rate of cm/min the top of a conical pile. The height of the pile is always when the height is 2 m. three-eighths of the base diameter. How fast are the height (Type an integer or decimal. Round to the nearest and the radius changing when the pile is 2 m high? hundredth.) The radius is changing at a rate of cm/min when the height is 2 m. (Type an integer or decimal. Round to the nearest hundredth.)