(Solved):   please answer and explain Question 2 One of the oldest level detection problems is that of ...

 

please answer and explain

Question 2 One of the oldest level detection problems is that of determining the level in a well underground. Today it is encountered at petrol stations where an automatic level indicator is not installed How can a petrol attendant estimate the volume (m) of fuel in a petrol storage tank which is located underground? (5 Marks]