Workkeys Math 2026 Complete Practice Test

To find the perimeter of a rectangle, you use the formula:

Perimeter = 2 * (Length + Width).

In this case, the length of the rectangle is 8 cm, and the width is 3 cm. Plugging those values into the formula gives:

Perimeter = 2 * (8 cm + 3 cm) = 2 * 11 cm = 22 cm.

This shows that the perimeter of the rectangle is indeed 22 cm, confirming that the correct answer is accurate. Knowing this formula is essential for solving similar problems involving rectangles, as it provides a straightforward method for calculating the total distance around the shape.