The term "100x100 (Area)" refers to a square with each side measuring 100 units. To find the area of this square, you multiply the length of one side by itself. In this case, the calculation is 100 x 100, resulting in an area of 10,000 square units. This concept is commonly used in geometry and can apply to various fields, such as architecture and land measurement. Understanding area is essential for tasks like determining the size of a room or the amount of paint needed to cover a surface, making it a practical skill in everyday life.