An excavated trench inside a building must be filled with clean fill. The trench is 30` long, 3` wide, and 2` deep. How much fill (disreguard soil swell) is required to fill the trench?

An excavated trench inside a building must be filled with clean fill. The trench is 30` long, 3` wide, and 2` deep. How much fill (disreguard soil swell) is required to fill the trench?