$($Continued Q$12)$ The diameter $($D$)$ of a cylindrical water tank is $0\mathrm{.}05$ m and tank$\text{'}$s height is H$=0\mathrm{.}5$ m$.$ The tank is filled with water, which is open to the atmosphere. An orifice of diameter d$=0\mathrm{.}002$ m with a smooth entrance $($i$.$e$.,$ negligible losses$)$ is open at the bottom. What will be the time required to empty the half of the tank? Gravitational force$=9\mathrm{.}81$ m$/$s$-.$ What will be the time in seconds required to empty the tank completely?L$$tfen birini secin:a$\mathrm{.}223\mathrm{.}7$b$\mathrm{.}199\mathrm{.}540\mathrm{.}174$d$\mathrm{.}56\mathrm{.}44$el $25\mathrm{.}25$