Answer:
9.025 inches
Step-by-step explanation:
Let the length be represented by:

Where  is the length of candle at time
 is the length of candle at time 
 is the rate at which the candle is burning.
 is the rate at which the candle is burning.
And  is the initial length of the candle.
 is the initial length of the candle.
As per the question statement, let us put the given values in the equation.

Subtracting (1) from (2):

Putting the value of  in the equation (1):
 in the equation (1):

Therefore, the equation becomes:

Now, we have to find the height of candle after 2 hours.
2 hours mean 120 minutes.

Therefore, the height of candle is <em>9.025 inches</em>.