At a given station, the $10-$y IDF relationship is given by: $i=\frac{2\mathrm{.}0}{(t+0\mathrm{.}1{)}^{0\mathrm{.}15}},$

where $i$ is the intensity in in$/$h$,$ and $t$ is the duration in minutes.

Calculate the intensity to the nearest $0\mathrm{.}01i\frac{n}{h}$ for a $10-y$ rainfall of duration $5\mathrm{.}4h.$

Answer: