Depth$-$Duration$-$Frequency table for $T=10$ years is given in the figure for a basin $5km2$ in size. Use the rational method to calculate the total volume of runoff $(m3)$ for a rainfall event of $2hr$ duration. The runoff coefficient for the basin is $0\mathrm{.}3.$ Time of concentration is $2$ hours.

$Q_p=CiA$

$=(0\mathrm{.}3),5k{m}^2$

$\backslash$table$[[T=10$ years$],[\backslash$table$[[$Time$],[(hr)$