What is the area of a rectangle with a length of 10 feet and a width of 4 feet?

To find the area of a rectangle, you multiply its length by its width. In this case, the length is 10 feet and the width is 4 feet.

Calculating the area involves:

Area = Length × Width

Area = 10 feet × 4 feet

Area = 40 square feet

This calculation shows that the area of the rectangle is 40 square feet, which corresponds to the correct answer. Understanding the formula for the area is fundamental in geometry and is applicable in many real-world situations, such as construction, landscaping, and any activity involving space measurement.