$17-46*($a$)$ Calculate the speed of sound on a day when a $1450$ Hz frequency has a wavelength of $0\mathrm{.}221$ m$.[$ Select $]["272\mathrm{.}1$ m$/$s$","345\mathrm{.}3$ m$/$s$","331\mathrm{.}5$ m$/$s$","308\mathrm{.}8$ m$/$s$","258\mathrm{.}4$ m$/$s$","320\mathrm{.}5$ m$/$s$","385\mathrm{.}7$ m$/$s$"]$

$($b$)$ What is the temperature $($in K$)$ outside on this day?