If a storage tank that measures 12 feet by 9 feet by 8 feet is designed to store gas that costs $1.82 per cubic foot, what does it cost to fill the tank to one-half of its capacity?

• carlosego: For this case, the first thing to do is find the volume of the tank.
   We have then:
   V = (12) * (9) * (8)
   V = 864 feet ^ 3
   Then, the cost of filling half the tank is given by:
   C = (1/2) * (1.82) * (864)
   C = 786.24 $
   Answer:
   It costs to fill the tank to one-half of its capacity about:
   C = 786.24 $