The diagram above illustrates the mercury-in-glass thermometer used for determining the temperature of a room. Use the data on it to determine the room temperature.
-
A.
3.3°C -
B.
7.0°C -
C.
13°C -
D.
30.0°C
Correct Answer: Option D
Explanation
Let the room temperature be X.
We have, (frac{3-0}{10-0} = frac{X-0}{100-0})
(frac{3}{10} = frac{X}{100})
(X = frac{3 times 100}{10})
= 30°C