Here are the design data for establishing a sewage plan in a certain area. Please answer the following questions:

Rainfall intensity: $I=\frac{4500}{t+300}m\frac{m}{h}r$

Watershed area: $0\mathrm{.}15k{m}^2$

Inflow time: $5$ minutes

Discharge coefficient $($C$)$: $0\mathrm{.}6$

Average flow rate within the conduit: $1\mathrm{.}5\frac{m}{sec}$

Length of the conduit: $900m$

What is the overflow discharge within this conduit in $\frac{m^3}{sec}?(5$ points$)$

What is the required cross$-$sectional area of the conduit in $m^2?(5$ points$)$