How much material is needed to fill a trench that is 1300′ long, 6′ deep and 4’6″ wide at the bottom and the sides are sloped at 1:1 ratio.

How much material is needed to fill a trench that is 1300′ long, 6′ deep and 4’6″ wide at the bottom and the sides are sloped at 1:1 ratio.