You first get 28ft because 3.5 x 8 x 1 = 28. Since you want it in meters you have to take 28 x 0.3048 = 8.5344. So you need to have 8.5344 meters3 soil.
218.75 cubic feet or 8.1 cubic yards
A 28 meter square is 28 times 28 meters or 784 square meters. If it is one tenth of a meter (10 cm) deep, it has a volume of 78.4 cubic metersIf you mean 28 square meters (like a pool 4 meters by 7 meters) then the volume one tenth of a meter deep is 2.8 cubic meters.
Not even close. The hole has a volume of 6 x 10 x 0.5 = 30 cubic meters.
10*13*3 = 390 cubic inches.
0.148 cubic yard for every 3-inches deep
360 cubic meters of salt.
23*38*4.5 = 3933 cubic meters are needed
Volume = 8*4*8/12 = 21.33... cubic feet = 0.604 cubic metres.
9,510.19 Gallons
2.37 cubic yards of dirt is needed to fill an 8'X4' that is 24" deep garden box. If the box is filled 12 inches, the amount of soil needed is 1.19 cubic yards and that should be deep enough for most vegetables.
218.75 cubic feet or 8.1 cubic yards
The answer is 23*38*4.4 = 3845.6 cubic metres.
A 28 meter square is 28 times 28 meters or 784 square meters. If it is one tenth of a meter (10 cm) deep, it has a volume of 78.4 cubic metersIf you mean 28 square meters (like a pool 4 meters by 7 meters) then the volume one tenth of a meter deep is 2.8 cubic meters.
1 50kg bag fill about 2 cubic f. so for 102cu.f. you'll need 51 bags
Not even close. The hole has a volume of 6 x 10 x 0.5 = 30 cubic meters.
10-1/2 cubic yards
0.148 cubic yard for every 3-inches deep