The perimeter of a rectangle is calculated by adding together the lengths of all four sides. For a rectangle, the formula is:

\[
P = 2(l + w)
\]

where:
- \( l \) is the length,
- \( w \) is the width.

In this case:
- \( l = 17 \, \text{ft} \),
- \( w = 4 \, \text{ft} \).

Substituting into the formula:

\[
P = 2(17 \, \text{ft} + 4 \, \text{ft}) = 2(21 \, \text{ft}) = 42 \, \text{ft}
\]

So, the perimeter is **42 feet**.

Would you like more details or have any questions?

Here are 5 related questions to expand on this:
1. How do you calculate the area of this rectangle?
2. What is the perimeter of a square with side lengths equal to 4 ft?
3. If the length is doubled, how does the perimeter change?
4. How do you find the diagonal length of this rectangle?
5. How does changing one side affect the perimeter of a rectangle?

**Tip**: Always double-check the units when calculating perimeters or areas!

Learn how to find the perimeter of a rectangle with length 17 feet and width 4 feet using the formula P = 2(l + w). This guide breaks down the steps for calculating the perimeter, providing an easy-to-follow solution. Ideal for students in Grades 5-7.

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