What is the area of a rectangle with a length of 5 cm and a width of 4 cm?

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

Area = Length × Width

In this case, the length of the rectangle is 5 cm and the width is 4 cm. Plugging these values into the formula gives:

Area = 5 cm × 4 cm = 20 cm²

This calculation demonstrates that the area of the rectangle is indeed 20 cm², making it the correct answer. Understanding the formula and performing the multiplication accurately confirms that the area is derived from the product of the rectangle's dimensions.