Steel tube

The steel tube has an inner diameter of 4 cm and an outer diameter of 4.8 cm. The density of the steel is 7800 kg/m3. Calculate its length if it weighs 15 kg.

Correct answer:

l =  3.478 m

Step-by-step explanation:

D1=4 cm m=4:100  m=0.04 m D2=4.8 cm m=4.8:100  m=0.048 m  r1=D1/2=0.04/2=501=0.02 m r2=D2/2=0.048/2=1253=0.024 m  S=π r22π r12=3.1416 0.02423.1416 0.0220.0006 m2  m=15 kg h=7800 kg/m3  V=m/h=15/7800=52010.0019 m3  l=V/S=0.0019/0.0006=3.478 m



Did you find an error or inaccuracy? Feel free to write us. Thank you!



avatar







Tips to related online calculators
Do you know the volume and unit volume, and want to convert volume units?
Tip: Our Density units converter will help you with the conversion of density units.
Do you want to convert mass units?

 
We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: