A compound curve has the following parameters:

$,I=60{50}^{\text{'}}{30}^{\text{'}\text{'}}$;$T_S={240\mathrm{.}83}^{\text{'}}$;$T_L={319\mathrm{.}85}^{\text{'}}$;$R_L={599\mathrm{.}99}^{\text{'}}$;

$I_S=25{06}^{\text{'}}{15}^{\text{'}\text{'}}$;$t_S={66\mathrm{.}79}^{\text{'}}$;$t_L={193\mathrm{.}43}^{\text{'}}$; $PI$ @ station $62+59$

If the larger radius curve is the first curve of this compound curve, what is the station of the PC$?$

If the smaller radius curve is the first curve of this compound curve with its PCC at station $60+70\mathrm{.}60,$ what is the station of the PT$?$

Calculate the radius of the smaller curve.

$13.$What is the length of the common tangent?