Try to fold the given net.

To find the area, we times its lenght and width.

This is symmetric and the possible lines of symmetry can divide its area into equal parts.

Count the rectangles of the border

The question is about a square shaped field.

Think of the definition of area of a shape.

Count the number of squares.

Try to fold the given net.

Counting number of squares enclosed in a figure

Count the number of squares.