The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of `R s\ 7. 50\ p e r\ m^2dot`

Explanation

To find the cost of whitewashing the walls and ceiling of the room, we need to follow these steps:

### Step 1: Identify the dimensions of the room
- Length (L) = 5 m
- Breadth (B) = 4 m
- Height (H) = 3 m

### Step 2: Calculate the area of the walls
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