Calculating the Area of the Crossroads at Right Angles:

To find the area of the crossroads at right angles through the center of the field, we need to consider the shape of the crossroads. Assuming the crossroads consists of four equal square sections, each road forms the sides of the squares. Let's break down the process step by step:

Step 1: Identifying the Shape
- The crossroads at right angles through the center of the field form a shape similar to a plus sign (+).
- Each road represents one side of a square.

Step 2: Understanding the Properties of Squares
- A square is a quadrilateral with four equal sides and four right angles.
- The area of a square can be calculated by multiplying the length of one side by itself.

Step 3: Calculating the Area of Each Square
- Let's assume the length of one side of the square is 's'.
- The area of each square can be found by multiplying 's' by 's', which gives us s^2.

Step 4: Determining the Total Area of the Crossroads
- Since there are four equal square sections in the crossroads, the total area of the crossroads is the sum of the areas of all four squares.
- Therefore, the total area of the crossroads can be calculated by multiplying the area of one square (s^2) by 4.

Step 5: Simplifying the Expression
- The simplified expression for the total area of the crossroads is 4s^2.

Conclusion:
The area of the crossroads at right angles through the center of the field is given by the expression 4s^2, where 's' represents the length of one side of the square. To find the exact numerical value of the area, you need to know the length of one side of the square.