What is the perimeter of a rectangle with length 10 units and width 4 units?

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

Perimeter = 2 * (length + width).

In this scenario, the length of the rectangle is 10 units and the width is 4 units. Plugging these values into the formula, we get:

Perimeter = 2 * (10 + 4)

= 2 * 14

= 28 units.

Thus, the perimeter of the rectangle is indeed 28 units, confirming that this is the correct answer. The perimeter represents the total distance around the rectangle, which in this case is made up of two lengths and two widths. This calculation helps define how long the boundary of the rectangle is in total.