What is the perimeter of a rectangle with a length of 10 and a width of 5?

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

Perimeter = 2 * (length + width)

In this case, the length is 10 and the width is 5. Plugging these values into the formula gives:

Perimeter = 2 * (10 + 5)

Perimeter = 2 * 15

Perimeter = 30

Therefore, the perimeter of the rectangle is 30. This calculation shows that the total distance around the rectangle, accounting for both the length and width, results in the correct perimeter value.