I just don't understand this question, I read it out a few times, but I'm not sure if I'm on the right track with this one

Question 10: [3 points} SHOW WORK A 44,000 litres rectangular closed tank is to have a length three times its width The cost per square meter for the bottom is 27 dollars, for the sides 22 dollars, and for the top 1'." dollars. Determine the least possible cost of material for the tank. Round your answer to the nearest dollar. Use: 1000 liters = 1 cubic meter. Least cost : $