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

To determine the area of a rectangle, the formula used is length multiplied by width. In this case, the rectangle has a length of 10 and a width of 5. By applying the formula, we calculate the area as follows:

Area = Length × Width = 10 × 5 = 50.

This calculation shows that the area of the rectangle is 50 square units. Therefore, the answer is correct because it aligns with the fundamental concept of calculating the area of rectangles. The other provided options do not match this area because they result from incorrect calculations of the dimensions or misunderstanding the area formula.