How many acre-feet are present in a pond that has an average depth of 5.4 feet and an area of 7.5 acres?

To determine the volume of water in a pond in acre-feet, you multiply the area of the pond in acres by its average depth in feet. The formula to calculate acre-feet is:

Volume (acre-feet) = Area (acres) × Depth (feet).

In this case, the pond has an area of 7.5 acres and an average depth of 5.4 feet. Applying the formula, we perform the calculation:

Volume = 7.5 acres × 5.4 feet = 40.5 acre-feet.

Thus, the number of acre-feet present in the pond is 40.5. This calculation directly reflects the total volume of water the pond can hold, considering both the area and the depth, making it a crucial numerical representation in managing aquatic environments.