How much area will 40 lbs of topsoil cover?

Could you please elaborate on the specifics of the topsoil you're referring to? Factors such as the density, particle size, and moisture content can significantly impact the coverage area of a given weight of topsoil. Without these details, it's challenging to provide an accurate answer. However, as a general question, I'd inquire: "What is the approximate depth of topsoil coverage that 40 pounds of topsoil can provide, assuming standard density and moisture content?