and the pipe radius is $1\mathrm{.}70$ cm $.$

$($a$)$ Find the speed of flow in the lower section.

m$/$s

$($b$)$ Find the speed of flow in the upper section. $\backslash (\backslash$mathrm$\{$m$\}/\backslash$mathrm$\{$s$\}\backslash )$

$($c$)$ Find the volume flow rate through the pipe.

$\backslash (1\backslash$mathrm$\{$~m$\}^\{3\}/\backslash$mathrm$\{$s$\}\backslash )$