You need to check locally. Most of the cost will be delivery.
Normally fill dirt is measured in cu-yds, not sq-yds. It's simple math to convert from the area that you want to cover and the depth desired to how many cu-yds it is going to take to get it to that depth.
Be careful usually it takes a yard just to fill the hose on the pumper truck
My suggestion is not to buy fill dirt but to go to a local construction site and pick some up there. Waste dirt is usually left over from leveling the land to build. A foreman/site manager might just let you have all the dirt you would like.
There are approximately 12 tons in 8 yards of dirt.
There are 27 cubic feet in a cubic yard. So, if you have 1 cubic yard of dirt, it is equivalent to 27 cubic feet of dirt.
None because it's a hole but 6 cubic yards of dirt will fill it up.
The same as it'll be in any other type of dump. There's no way to actually give a precise answer without knowing what the commodity is... a yard of mulch, a yard of fill dirt, and a yard of asphalt millings aren't going to weigh the same. A general rule of thumb is one ton per yard of fill dirt or hard ag product, but that's a guesstimation at best... really depends on exactly what the product is, and also how lossely it's packed... dry, loose sand and most, packed fill dirt will likewise give you two very different weights.
You are mixing volume (square yard) and area (length x width). How deep do you want the dirt? One foot deep you need about 80 square yards of dirt.
2.37 cubic yards.
No, a cubic yard of gravel will have a different volume measurement compared to a cubic yard of dirt because they have different densities. Gravel is denser and heavier, so it will take up less volume than dirt in a cubic yard.
This answer will vary depending on what type of dirt it is, if it is a yard high, or a yard long, or whether there are particles in the dirt that will cause it to be heavier, such as water. But a normal yard high of dirt and I am assuming this as if it is a yard long and high, would be about ten to twenty pounds. This is answered off of the top of my head, so don't think it as 100% correct. Hope I helped you well enough!