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A pound of bricks and a pound of feathers weigh the same because they both weigh one pound. The difference lies in their volume, with bricks being denser and taking up less space compared to feathers.
Bricks have more density whereas feathers have less comparatively. Space occupied ie volume = mass/ density. So space occupied is inversely related to the density. Hence feathers occupy more space than the bricks.
So you get the volume of one brick. Measure the length, width and height of one brick. Convert each to metres (/100 is you measured in centimetres). Now divide a cubic metre by the volume of 1 brick to get how many bricks would make a completely filled in cubic metre. Keep in mind, this method does not count any cement needed to secure the bricks
multiplyL xW x H to find the volume of 1 brick. Each measurement should be in cm. 1 cubic meter = (100 cm)3 = 1,000,000 cm3 now divide the volume of 1 brick INTO 1,000,000 that gives the number of bricks.
standard size of brick is 9in*4.5in*3in so formula is 1 Cmt/ brick volume that is 1 / 0.228*0.11*0.0762 1 / 0.002 = 500 Bricks