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 can use the formula:

Perimeter = 2 × (Length + Width).

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

Perimeter = 2 × (10 + 5) = 2 × 15 = 30.

Thus, the perimeter of the rectangle is 30. This means if you were to walk around the entire boundary of the rectangle, you would cover a distance of 30 units.