Fill in the blanks!

To fill in the blanks, let's clarify the dimensions for the dog park based on the information provided. It seems the length (l) and width (w) need to be determined.

You've mentioned that the perimeter \( P \) of the park is calculated using the formula for the perimeter of a rectangle:

\[ P = 2l + 2w \]

Let's assume the following dimensions based on your input:
- Length \( l = 250 \) feet
- Width \( w = 125 \) feet

Now, we can fill in the blanks:

1. **Filling in the formula**:
- \( P = 2(250) + 2(125) \)

2. **Calculating the each part**:
- \( 2(250) = 500 \)
- \( 2(125) = 250 \)

3. **Summing these values**:
- \( P = 500 + 250 = 750 \) feet

Thus, we can fill in the blanks:

Middle City is building a new dog park. Determine the amount of fencing it needs by finding the perimeter of the park. Evaluate the formula for the perimeter of a rectangle, \( P = 2l + 2w \), for the dimensions shown.
\( P = 2(250) + 2(125) \)
= 500 + 250
= **750 ft**

We need **750 feet** of fencing to go around the park.

**Park Perimeter**
\( P = 2l + 2w \)
**Length (l)**: 250 feet
**Width (w)**: 125 feet

Now for the **Park Area**, using the formula \( A = lw \):
\[ A = 250 \times 125 = 31,250 \text{ square feet} \]