Backfill Trench Calculator

In construction, there are many methods to accomplish the same result. The main requirement is that the work is done according to the specification written for that particular project. When it comes to trench Backfill, the specification usually allows the contractors several choices for filling the area over the pipe and under the pavement. But those of us working in the field long enough have probably come to prefer one over the other. Filling a trench in an efficient way requires knowledge of the volume of material needed.
Giving inputs as length,width,depth and diameter of wire/cylinder
outputs volume of trench,and volume of Backfill needed to it.