4. Evaluation of tank wall thickness: Your boss tells you that the company has an unused 2.2 m3carbon steel tank (4 meters long) that he wants you to evaluate as to whether it is suitable foruse as a pressurized stirred tank reactor. He says the carbon steel walls of the tank have a thickness of 6 mm, and you are able to find that the tensile strength (ơtens) O of carbon steel is 260MPa. If your boss says you need to have a 2X safety factor in this pressure calculation, then what is the maximum working pressure that you calculate that this tank can be subjected to without any risk of rupture? Give your answer for the working pressure in psig. You will first need to calculate the tank diameter from the information given in the problem.