To calculate the area of the black material on the flag, we need the shape and the dimensions of the black material itself.
<em>Since the question is incomplete, as the dimension of the flag and the dimension of the black material are not given, I will provide a general explanation</em>
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Assume the shape of the black material is a rectangle.
The area will be calculated as:
Take for instance;
The area is:
Assume the shape of the black material is a square.
The area will be calculated as:
Take for instance;
The area is:
Assume the shape of the black material is a triangle
The area will be calculated as:
Take for instance;
The area is:
So, in general.
You need to first get the shape of the black segment on the flag, then calculate the area using the appropriate formula.
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