How do I calculate the weight of a steel bar per circle cm?

Question

Diameter: 10

Height: 40

Answer 1

Weight=Area*height*Density

Density steel 7870 kg/m^3

[diameter=10/100 m

Height=40/100 m

Area=pi*diameter^2 / 4

Area=3.14*0.1^2 / 4

Area=0.00785 meter^2

Weight=0.00785 *40/100* 7870 kg

Weight=24.7118 kg

Edit:

Area*height or length = volume

volume=mass/density

Mass=volume*Density

Got it?

Answer 2

What is a circle cm?

If it's a steel bar with radius of 10 cm and length 40 cm, then the volume is 12600 cm³, or 0.0126 m³

density steel 7870 kg/m³

weight is 7870 kg/m³ x 0.0126 m³ = 99 kg

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