[填空题]
In an alcohol-in-gla,kc 7 -lc 6e1j/juyfbcss thermometer.*wzm ie;dyl *, the alcohol column has length 11.82 cm at 0.0wyd*i*mze ;.l $^{\circ} $ C and length 22.85 cm at 100.0 $^{\circ} $ C. What is the temperature if the column has length
(a) 16.70 cm, $^{\circ} $ C
(b) 20.50 cm? $^{\circ} $ C