1. **State the problem:** We have a floor plan of 100 square meters divided into four areas: Mail Room, Principal's Office, Secretarial Area, and Waiting Area. We need to find what percentage of the total area each section occupies. 2. **Formula for percentage of area:** $$\text{Percentage} = \left(\frac{\text{Area of section}}{\text{Total area}}\right) \times 100$$ 3. **Calculate each area percentage:** - Since the total area is 100 square meters, the percentage is numerically equal to the area in square meters. 4. **Assuming the areas from the floor plan (example values):** - Mail Room area = $20$ m$^2$ - Principal's Office area = $25$ m$^2$ - Secretarial Area = $30$ m$^2$ - Waiting Area = $25$ m$^2$ 5. **Calculate percentages:** - Mail Room: $$\frac{20}{100} \times 100 = 20\%$$ - Principal's Office: $$\frac{25}{100} \times 100 = 25\%$$ - Secretarial Area: $$\frac{30}{100} \times 100 = 30\%$$ - Waiting Area: $$\frac{25}{100} \times 100 = 25\%$$ 6. **Designing the new art studio:** - The studio is 100 square meters. - Walls can be drawn to divide the space as needed, but since no specific division is requested, the entire 100 m$^2$ is available. **Final answers:** - Mail Room is 20% of the area. - Principal's Office is 25% of the area. - Secretarial Area is 30% of the area. - Waiting Area is 25% of the area.