MHB Shaded region in terms of set notation

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The shaded region in set notation is expressed as the difference between sets, specifically as B - A. This indicates the elements that are in set B but not in set A. An equivalent expression for this relationship is B ∩ A', where A' represents the complement of set A. Understanding these notations is crucial for accurately describing set relationships. Proper use of set notation clarifies the distinctions between different sets.
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I'm having trouble in expressing the shaded region in set notation (Thinking)

Many Thanks :)
 

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mathlearn said:
I'm having trouble in expressing the shaded region in set notation (Thinking)

Many Thanks :)
It's the things which are in $B$ but not in $A$. So it is $B-A$.
 


An equivalent statement: B \cap A'
 

Thread 'Area of Overlapping Squares'

Here is a little puzzle from the book 100 Geometric Games by Pierre Berloquin. The side of a small square is one meter long and the side of a larger square one and a half meters long. One vertex of the large square is at the center of the small square. The side of the large square cuts two sides of the small square into one- third parts and two-thirds parts. What is the area where the squares overlap?
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