concrete weight
One cubic meter of water is one thousand kilograms.
1 cubic meter = 10 X 10 X 10 cubic decimeters. 1 cubic decimeter of water has a mass of 1 kilogram. Therefore, 1 cubic meter has a mass of 103 kilograms, or 1000 kilograms, and 3 cubic meters therefore have a mass of 3000 kilograms.
Density = 300/15 kilograms per cubic meter = 20 kilograms per cubic meter
19 100 kilograms
At 25 degrees Celsius the density of fresh water is 997.04 kilograms per cubic meter or 0.99704 grams per cubic centimeter. The mass m = 0.8 cubic meter times 997.04 kilograms per cubic meter = 797.632 kilograms.
907.18 kilograms.
The mass of a cubic metre of concrete is 2250-2400 kilograms.
The medium density should given to convert from mass (kilogram) to volume (1 cubic meters). Assuming water of 1000 kg/cubic meter, than 1 cubic meter would contain 1000 kilograms,
790 kilogram wheat will be present in a cubic meter.
mass = volume x density. The units, of course, have to be compatible - for example, if the volume is in cubic meters, and the density in kilograms per cubic meter, the mass will naturally be in kilograms.
19 050 kilograms
Density is mass divided by volume. For example kilograms per cubic meter.