A region is said to be a closed area if it is completely enclosed by its constraints.
What is an area?
The space occupied by any two-dimensional figure in a plane is called the area. For example, the space occupied by the circle in a two-dimensional plane is called the area of the circle.
The area of the circle is given by the formula below:-
Area = πr²
Where r is the radius of the circle.
Therefore, the region is said to be a closed area if it is completely enclosed by its constraints.
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