A rectangular pool measures 20m by 10m . What is the perimeter of the pool ?

Answer

To find the perimeter of a rectangular pool that measures 20 meters by 10 meters, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Length and Breadth**:
- The length (L) of the pool is given as 20 meters.
- The breadth (B) of the pool is given as 10 meters.

2. **Use the Perimeter Formula**:
- The formula for the perimeter (P) of a rectangle is:
\[ P = 2 \times (L + B) \]

3. **Substitute the Values into the Formula**:
- Substitute the length and breadth into the formula:
\[ P = 2 \times (20 \, \text{m} + 10 \, \text{m}) \]

4. **Calculate the Sum Inside the Parentheses**:
- First, calculate \(20 \, \text{m} + 10 \, \text{m}\):
\[ 20 + 10 = 30 \, \text{m} \]

5. **Multiply by 2**:
- Now, multiply the result by 2:
\[ P = 2 \times 30 \, \text{m} = 60 \, \text{m} \]

6. **Final Result**:
- Therefore, the perimeter of the pool is:
\[ P = 60 \, \text{meters} \]