How do you calculate the perimeter of a rectangle?

To find the perimeter of a rectangle, the formula is derived from the fact that a rectangle has two lengths and two widths. The perimeter is the total distance around the rectangle, which means you need to add all the sides together.

The formula for the perimeter can be expressed as the sum of all sides: P = length + width + length + width, which can be simplified to P = 2l + 2w. This indicates that the perimeter is twice the length plus twice the width.

This formula encompasses all sides of the rectangle and is essential for accurately calculating the total boundary length. The correct answer captures this relationship perfectly, providing a straightforward method for determining the perimeter based on the dimensions of the rectangle.