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The problem involves finding the area of the shaded rectangle, given a diagram where tiles are arranged around it. Let's break down the available information and how to approach this.

### Observations:
1. The dimensions of the entire arrangement (outer rectangle) are given:
   - Length: 123 cm
   - Width: 67 cm

2. There are 12 identical rectangular tiles surrounding the shaded rectangle.

### Assumptions and Calculation Strategy:
- The tiles are arranged symmetrically along the edges of the shaded rectangle, meaning the shaded rectangle is smaller than the outer dimensions by exactly the width of the tiles.
- To solve this problem, we need to figure out the width of each tile (likely consistent on all sides), subtract this width from the total dimensions to find the dimensions of the shaded rectangle, and then calculate the area.

### Approach:
1. **Determine the dimensions of the tiles**: 
   - By observing the diagram, it's possible that the tiles along the edges of the rectangle form an outer "frame."
   - Once we know the width of each tile, we can subtract twice this value (once for each side) from both the length and width of the outer rectangle.

2. **Calculate the area of the shaded rectangle**:
   - After finding the dimensions of the shaded rectangle, multiply its length and width to find the area.

Let me first compute the missing dimensions by estimating the size of the tiles based on the outer dimensions and then proceed to calculate the area.The estimated area of the shaded rectangle is **4841 cm²**, based on the assumption that each tile has a width of 10 cm. 

This calculation is based on subtracting the tile width from both the length and width of the outer rectangle. If more precise information about the tile width is provided, the calculation may be refined.

Do you need further clarification or more detailed steps on how to adjust this calculation?

### Related Questions:
1. How can the exact width of the tiles be calculated more accurately?
2. If the tile width changes, how would it affect the area of the shaded region?
3. What is the formula for calculating the perimeter of the shaded rectangle?
4. How do the number and arrangement of tiles influence the dimensions of the inner rectangle?
5. Can this problem be solved using algebraic methods if only the total number of tiles and outer dimensions are known?

**Tip**: When faced with problems involving areas and perimeters, visualizing or sketching the arrangement can help clarify relationships between different measurements.

Work out the area of the shaded rectangle in the given diagram, where 12 identical tiles are arranged to fit exactly around the shaded rectangle.

Learn how to calculate the area of a shaded rectangle surrounded by 12 identical tiles. This problem involves key geometric concepts such as calculating areas and subtracting dimensions. The problem is suitable for students in Grades 6-8.

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