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8*3.5*1000*1000 litres
50x50x5mm sleel angle per meter lenth in weight kilo gramm ?
The weight of standard air is 1.2256 Kg/ Cubic Meter The weight of hydrogen is 0.0857 Kg/ Cubic Meter The weight of helium is 0.1691 Kg/ Cubic Meter Subtracting the weight of hydrogen from air gives you the gross buoyant lift of hydrogen as 1.1399 Kg/Cubic Meter Subtracting the weight of helium from air gives you the gross buoyant lift of helium as 1.0565 Kg/Cubic Meter These values are variable under altitude, pressure, temperature, humidity and purity of gas. Hope this helps you.
Most companies use weight to measure how much a diaper can hold. Weigh it before and after then subtract the weight before from the weight after.
1 meter of 50x25x4mm RHS weighs 4.2 kg