The information we can derive from the picture is:
The size of the Campbell's soup can (normal size).
The height of the bike in the photo.
Observe that the water tank is in the same proportion as the Campbell's soup can.
Speaking as a teacher, I think this question can be solved by firstly examining the dimensions of a standard Campbell's soup can. This may include its diameter and height.
After obtaining the dimensions of the soup can, use the information about the height of the bike in the photograph to determine the ratio between the soup can and the water tank. Apply the proportions to find the dimensions of the water tank.
Based on the cylindrical shape of the water tank, use the formula to calculate the volume of the water tank. I would then go on to assess whether the volume of the water tank is practical for firefighting purposes.
As a student, firstly I think I would have problems finding the proportions. However, I would ask my teacher for advice on how to find proportions and I realized that later on I might not quite know how to calculate the volume of a cylinder and I would seek help from my teacher.
Extension of this puzzle:
Calculate by estimating the volume of the calculated tank: how long does it take to fill a standard fire hose from the tank? Should the specification of the fire hose be considered? If the tank is used to extinguish a fire, is the time taken to empty the tank adequate for a typical fire?
Thanks Chernie. This will be fine.
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