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

To find the area of a rectangle, the formula used is:

Area = Length × Width.

In this case, the length of the rectangle is 10 and the width is 5. When you multiply these two dimensions together:

Area = 10 × 5 = 50.

This calculation shows that the area of the rectangle is 50 square units. Therefore, the correct answer is 50, reflecting the proper application of the area formula for rectangles.