Please solve A long steel rod initially at a uniforn temperature of $350\backslash$deg C is immersed in an oil bath maintained at $25\backslash$deg C$.$ The diameter of the rod is $45$ cm and the uniform temperature of $350$ Cers coefficient is $115$ Wm $\text{'}$K$.$ Calculate the time in seconds for the temperature difference bertace convete he ale and and is suface to fall below $60\backslash$deg C$.($k$=32\mathrm{.}5$ W$/$mK$,$ a $=0\mathrm{.}037$ m$?$h$)$ Write your assumptions clearly and show your calculation in detail.