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\fA metal cube dissolves in acid such that an edge of the cube decreases by 0.50 mm/min. How fast is the volume of the cube changing when the edge is 7.50 mm? The volume is changing at a rate of mm3/min. (Round to the nearest integer as needed.)A circle is growing, its radius increasing by 3 mm per second. Find the rate at which the area is changing at the moment when the radius is 18 mm. When the radius is 18 mm, the area is changing at approximately (Round to the nearest thousandth as needed.)