What is the length of AC

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

Somone me i want to know what 18 hours out of 24 hours in a fraction

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min