The distance between the fixed points of a centigrade thermometer is 20cm. What is the temperature when the mercury level is 4.5cm above the lower mark?

The distance between the fixed points of a centigrade thermometer is 20cm. What is the temperature when the mercury level is 4.5cm above the lower mark?

Answer Details

20cm .... 100oC

4.5cm .... $\theta$

0cm ....0oC

$\frac{4.5-0}{20-0}$ = $\frac{0-0}{100-0}$

$\theta$ = 22.5oC