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w = unknown width
We have two copies of w, since we have two parallel width portions, along with two copies of 132 being added to get the perimeter of the rectangle.
perimeter = sum of all sides
p = 132+132+w+w
p = 2w+264
Set this equal to the given perimeter of 346 and solve for w
2w+264 = 346
2w = 346-264
2w = 82
w = 82/2
w = 41
The width of the building is 41 meters
