Question: how many square feet does one ton of asphalt cover?
Answer: The density of asphalt is generally given at 140 lbs per cubic foot (I have assumed you would like this in imperial as you use feet) At that density a ton ( 2240 lbs) is 16 cubic feet so it now comes down to how thick you want the coating, at 1 inch thick the ton will cover 12 x 16 (192) square feet.