What is the surface area of an evapotranspiration system that is 40 feet wide and 65 feet long?

To determine the surface area of a rectangular system such as an evapotranspiration system, the formula used is:

Surface Area = Width × Length.

In this scenario, the width of the system is 40 feet and the length is 65 feet. Plugging these values into the formula gives:

Surface Area = 40 feet × 65 feet = 2600 square feet.

This calculation confirms that the surface area of the evapotranspiration system is indeed 2600 square feet. Hence, the correct answer is based on applying the appropriate area formula for rectangles correctly and arriving at the right numerical result derived from the given dimensions.