What is the area of a rectangle with a length of 8 and a width of 5?

To find the area of a rectangle, you use the formula: area = length × width. In this case, the length is 8 units and the width is 5 units. By substituting these values into the formula, you calculate:

Area = 8 × 5 = 40 square units.

Therefore, the area of the rectangle is 40 square units, which corresponds to one of the choices provided. This is the correct answer because it directly applies the formula for calculating area based on the dimensions of the rectangle.