Here are the dimensions and specifications for a 50 m² circular classroom translated into English:

### Main Geometric Dimensions

* **Total Diameter:** **7.98 meters** (you can round to **8.00 m** on-site, which gives a real area of 50.26 m²).
* **Radius:** **3.99 meters** (or **4.00 m** rounded).
* **Perimeter / Circumference:** **25.07 meters** (total length of the outer curved wall).

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### Recommended Ergonomic Layout for a 50 m² Space

To comfortably accommodate 25 to 30 people in a circular classroom:

* **Flexible Furniture:** Arrange desks or tables in a semicircle (horseshoe or amphitheater style) facing the main board or presentation screen.
* **Circulation Zone:** Keep a clearance aisle of **1.00 m to 1.20 m** along the outer wall for walkway access.
* **Teacher Zone:** Reserve a front radius of at least **2.00 m** near the board for teaching and movement.

Would you like advice on furniture arrangements, door/window placement, or lighting layout for this circular design?