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

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

Area = Length × Width.

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

Area = 10 × 5 = 50.

Therefore, the area of the rectangle is indeed 50 square units. This calculation confirms the correctness of the choice provided. The other options do not align with the calculated area, highlighting that they are not based on the correct application of the formula for the area of a rectangle.