A distillation tower $($taken as a vertical pressure vessel$)$ has a shell mass of $150,000$ kg$.$ Furthermore, the towerwill contain sieve trays of $2\mathrm{.}5$ m$.($a$)$ What is the total cost of the distillation tower? $($b$)$ What would be the cost of the distillation tower if it were made of $314$stainless steel material?