Let's let L be the unknown side length of the logo, in meters. The area of the logo is given by the formula:
Area = length x width
Since we know that the logo is rectangular and that the length is 1.9 meters, we can write:
Area = 1.9L
We also know that the area is exactly the maximum area allowed by the building owner. Let's call this maximum area A. Then we can write:
Area = A
Putting these two equations together, we get:
1.9L = A
This is the equation that could be used to determine L, the unknown side length of the logo, based on the maximum area allowed by the building owner. To solve for L, we can simply divide both sides of the equation by 1.9:
L = A/1.9
Therefore, the length L of the logo is equal to the maximum area allowed by the building owner, divided by 1.9 meters.