How many acres is a wastewater lagoon that has dimensions of 450 feet by 300 feet?

To determine the area of a wastewater lagoon with dimensions of 450 feet by 300 feet, you start by calculating the area in square feet. The formula for area is length multiplied by width. In this case:

Area = 450 feet × 300 feet = 135,000 square feet.

Next, to convert square feet to acres, you use the conversion factor that 1 acre is equal to 43,560 square feet. Therefore, you divide the total area in square feet by the number of square feet in an acre:

Area in acres = 135,000 square feet ÷ 43,560 square feet/acre ≈ 3.1 acres.

This calculation shows that the lagoon is approximately 3.1 acres in size, which is why the correct answer is accurate. This conversion is essential in various applications, including land evaluation, environmental impact assessments, and compliance with regulatory requirements in wastewater management.