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How can you know that 25 mm steel measuring 1 meter should be weighing how much?
Javed24797
Mass (weight) = density * volume
Density of steel = 7.85 grams per cubic centimetre
Presuming it is round with diameter 25 mm (2.5 cm) radius 1.25 cm
Length 100 cm
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Volume = cross sectional area (csa) * length (100 cm)
csa = pi * radius 2 = 4.909 sq cms
volume = 4.909 * 100 = 490.9 cu cm
mass (weight) = 7.85 * 490.9 = 3853.565 grams (3.853565 kg)
This is the weight per metre length of that csa, for other weights, multiply answer by length in metres.
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∙ 12y ago
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