Which formula correctly calculates the volume of a pond in acre feet?

The formula that accurately calculates the volume of a pond in acre-feet is based on the concept of surface area and depth. Specifically, the volume can be derived from the surface area measured in acres and the average depth measured in feet. This method reflects the total space the water occupies in the pond, thereby providing a true measure of its volume.

An acre-foot represents the volume of water needed to cover one acre of land to a depth of one foot. Therefore, by multiplying the surface area of the pond in acres by the average depth in feet, you obtain the total volume in acre-feet. This formula effectively accounts for the shape and size characteristics of the pond, as well as its varying depth, which is essential for practical aquatic pest control scenarios.

The other options do not provide an accurate calculation for the volume of a pond in acre-feet. For instance, simply multiplying length by width does not consider the depth, meaning it can't reflect a three-dimensional space. Width and depth alone also overlook the importance of surface area in this context. Similarly, the average depth multiplied by the total shoreline length does not correlate with the actual volume of water, as it does not involve the surface area necessary for accruing the correct measurement in acre-feet.