Ounece per sq yards

186 x 87 = 16182 Sq feet.
1 acre is 43560 Sq feet.
1/4 of an acre is 10890 Sq feet.

School homework?

3.3 tons to 5.57 tons running the calculations on this website: The span is explained in the text.

https://www.reference.com/home-garden/weight-gravel-per-cubic-yard-4330b7af0b93a8ea

Here are other figures you can compare: http://dansdirtandgravel.com/material_calculator.htm

Stone is approximated at about 2700 lbs. per cu. yd.
An acre is 43560 sq. ft.
8.5 acres is 370260 sq. ft.
There 9 sq.ft. per sq. yd., thus there are 41140 sq. yds. in 8.5 acres.
A cubic yard is 3 feet by 3 feet by 3 feet (LxWxH).
Since you are only going to be at 1.5 feet, each square yard is equal to 1/2 cubic yard, so to figure the cubic yards divide sq.yds. by 2, thus you get 20570 cu. yds. of stone.

20570 x 2700 = 55539000 pounds. Divide by 2000 to get tons:
55539000/2000 = 27769.5 tons.

As a rule of thumb, you can multiply the cubic yards by a factor of 1.4 to get tons. But remember, yards is a measure of volume where tons is a measure of weight. Thus, depending upon the material being calculated, true weight can vary greatly. Obviously a yard of wet sand will weigh far more than a yard of dry sand, as water is more dense and has more weight than the sand it displaces in the volume. Large crush stone may weigh far less than pea gravel for the same volume as there is less air gap around the gravel than there is around the large crush. If you need a true weight of a yard of some material, you would have to know its weight in a particular volume and then calculate from that value.

The pound avoirdupois is the weight system used in the united states based on 16 ounces. Avoirdupois pound is exactly 0.45359237 kgs.
Troy weight is based on 12 ounce pounds and is used primarily for precious metals. The ounce is actually heavier than the avoirdupois ounce, the troy ounce is 480 grains, compared with the avoirdupois ounce, which is 4371?2grains. Both systems use the same grain defined by the international yard and pound agreement of 1959 as exactly 0.064 798 91 gram.
Hope this helps

None. You can't go from square to cubic, without telling how high the place is.

http://www.calculatorsoup.com/calculators/construction/cubic-yards-calculator.php

AC is approx. 145 lbs per cubic ft.
there are 27 cubic ft in 1 cubic yard
60 tons x 2000 = 120000 divided by 145 = 827.58 cubic ft divided by 27 = 30.65 cubic yards

square yards would depend on thickness of AC.
you can take thickness x sq ft to get cubic ft

in concrete 1 cubic yard =
4 inch thickness = 81 sq ft or 9 sq yrds
6 inch thickness = 54 sq ft or 6 sq yards

Hello. That's a little tricky. I had 10 yards delivered years ago and I figured that I filled my wheelbarrow about 15 times for each yard. Keep in mind that usually 10 - 12 loads of soil is about 1 cubic yard, but obviously lighter and easier to push. So,...count on about 160 -180 lbs per load times 15 loads per yard equals 2400 - 2700 pounds. Times that, times 20 yards, and you have 48000 - 54000 pounds, or about 24 - 27 tons. Now, you have to think about all that dirt on the rocks which I don't think will add too much weight unless it's being dug out of clay then you might want to add a few hundred pounds per ton.

You say 200yds do you mean 200 sq yds or cubic yds? There are 9 cubic feet in a square yard 1ft deep and 27 cubic ft in a cubic yard. You will have to know and factor in the weight of 1 cubic ft of manure to get your tonnage. 2,000 lbs in a short ton.