47.55 cubic yards . 4" would be 5.23 cubic yards.
39.1116 cubic yards
It depends on what "5 thick" is: 5 inches thick, 5 feet thick, 5 yards thick, 5 miles thick etc.
I think you mean 6 inches thick, not 6 feet thick. You would need 200 cubic feet, or 7.4 cubic yards.
20 feet x 20 ft x .3333 ft = 133.33 cubic feet / 27 cubic feet per yard = 4.94 cubic yards
One square yard is nine square feet, so 27 square feet is equivalent to 3 square yards. So 3 yards of concrete will cover 27 square feet.
about 26.4 is the volume i think.......
1 cubic yard will cover ~90 sq feet
27 cubic yards.will cover 720 square feet @ 1 foot thick
0.69444 cubic yard (rounded)
one (1) cubic yard of concrete four inches thick will cover 80 sq. feet. 85 yards x 81 = 6885 sq. feet.
5.93 cubic yards.
Square yards is a measure of area, you need to purchase your sand as a volume not an area. You will need 2000 cubic feet of sand.