you will need at least 28, (1.2mx0.6m=0.72m^2, 20/0.72=27.7) assuming they fir the way you want them to, i would get a two or three extra depending on the exact shape of the area you want to fill.
it is like a fill in the blank
1210
by moving the square things to fill up the empty squares
112 cuft
5,290 Pieces
124.7 sheets
Yes.
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.
It depends on the depth to which the area is filled.
1000000 square millimeters fill 1 square meter.
360 cubic meters of salt.
More information is needed in order to answer this question. The size of the pond, preferably in square meters.
Homework sheets are usually given out by your teacher. If you lose one, you should ask your teacher for a replacement.
Gravel is bought in cubic quantities, or by weight. You ask "to fill" but you only give a square measure. The volume of gravel required wil depends on the depth you wish the gravel to be. To fill 81 square metres to a depth of 5 cm would require 4.05 cubic metres of material.
"Square meter" is a unit of area. "Cubic meter" is a unit of volume.If you have a large box, the "square meters" of its sides would tell you how much paint you needin order to paint the sides, whereas the "cubic meters" of its inside would tell you how much waterit would take to fill it."Square" meters and "Cubic" meters are completely different units, and they're used to measurecompletely different quantities. Neither one can be converted into the other. That would be liketrying to convert your age into gallons.
1000litres
42,000