To calculate the total area of the four walls of a room when the length, breadth, and height are in the ratio of 3:2:1, follow these steps:
1. **Define Variables**: Let the height of the room be represented as h. Based on the ratio:
- Length (l): 3h
- Breadth (b): 2h
- Height (h): h
2. **Calculate the Area of the Walls**: The total area of the four walls can be calculated using the formula:
Total Area = 2 * (l + b) * h
Substituting our values into the formula:
- Total Area = 2 * ((3h) + (2h)) * h
- Total Area = 2 * (5h) * h
- Total Area = 10h2
3. **Conclusion**: Therefore, the total area of the four walls of the room is 10h2, where h is the height of the room.