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1 brass sand = 4.528 Metric tones (tonnes) That's because 1 brass = 100 cub ft sand. In metric, 1 cubic meter (cum) = 1600 Kg sand. 1 cubft = 0.0283 cum Therefore, 1 brass = 100 x 0.0283 x 1600 = 4528 Kg = 4.528 metric tones (or 'tonnes') That's for dry sand. If it has been raining or the sand is taken from a wet shore, this increases, on average, to 5.09 tonne.
density of sand is approx 2.6 kg/L density = mass / volume => mass = volume * density and as 1m3 = 1000 litres mass = 1000 litres * 2.6 kg/l =2600kgs
the mks unit is kg/m cube and the cgs unit is g/cm cube
Because sand is a more dense substance than feathers - it has a larger mass-to-volume ratio.
-1X-1X-1=-1 therefore cube root of -1 = -1