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.


l =  3.478 m


D1=4 cm=4/100 m=0.04 m D2=4.8 cm=4.8/100 m=0.048 m  r1=D1/2=0.04/2=150=0.02 m r2=D2/2=0.048/2=3125=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=15/780015200.0019 m3  l=V/S=0.0019/0.00063.4783.478 mD_{1}=4 \ cm=4 / 100 \ m=0.04 \ m \ \\ D_{2}=4.8 \ cm=4.8 / 100 \ m=0.048 \ m \ \\ \ \\ r_{1}=D_{1}/2=0.04/2=\dfrac{ 1 }{ 50 }=0.02 \ \text{m} \ \\ r_{2}=D_{2}/2=0.048/2=\dfrac{ 3 }{ 125 }=0.024 \ \text{m} \ \\ \ \\ S=\pi \cdot \ r_{2}^2 - \pi \cdot \ r_{1}^2=3.1416 \cdot \ 0.024^2 - 3.1416 \cdot \ 0.02^2 \doteq 0.0006 \ \text{m}^2 \ \\ \ \\ m=15 \ \text{kg} \ \\ h=7800 \ \text{kg/m}^3 \ \\ \ \\ V=m/h=15/7800 \doteq \dfrac{ 1 }{ 520 } \doteq 0.0019 \ \text{m}^3 \ \\ \ \\ l=V/S=0.0019/0.0006 \doteq 3.478 \doteq 3.478 \ \text{m}

Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!

Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!

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?

Next similar math problems:

  1. Metal tube
    pipe2 Calculate the metal tube mass 8dm long with the outer radius 5cm and the inner radius 4.5cm and 1cm3 of this metal is 9.5g.
  2. The pot
    hrnec The pot is a cylinder with a volume of V = 7l and an inner diameter of d = 20cm. Find its depth.
  3. Height of the cylinder
    valec The cylinder volume is 150 dm cubic, the base diameter is 100 cm. What is the height of the cylinder?
  4. The pot
    hrniec_1 Diameter of the pot 38 cm. The height is 30 cm. How many liters of water can fit in the pot?
  5. Conva
    konva_1 How many liters of water fit into the shape of a cylinder with a bottom diameter 20 cm and a height 45 cm?
  6. Liquid
    valec How much liquid does the rotary cylinder tank hold with base diameter 1.2m and height 1.5m?
  7. Excavator
    pisek The excavator bucket capacity is 0.5 m3. Determine the mass of sand that the excavator picks up. The sand density is 1650 kg/m3.
  8. Railway wagon
    cargo The railway wagon holds 75 m3 load. Wagon can carry a maximum weight of 30 tonnes. What is the maximum density that may have material with which we could fill this whole wagon? b) what amount of peat (density 350 kg/m3) can carry 15 wagons?
  9. Common cylinder
    valec_2 I've quite common example of a rotary cylinder. Known: S1 = 1 m2, r = 0.1 m Calculate : v =? V =? You can verify the results?
  10. Two circles
    two_circles Two circles with a radius 4 cm and 3 cm have a center distance 0.5cm. How many common points have these circles?
  11. Expression
    expr_2 Solve for a specified variable: P=a+4b+3c, for a
  12. The shop
    lahev The shop has 3 hectoliters of water. How many liter bottles is it?
  13. Circular pool
    b1 The 3.6-meter pool has a depth of 90 cm. How many liters of water is in the pool?
  14. Simplify
    numbers3_1 Simplify the following problem and express as a decimal: 5.68-[5-(2.69+5.65-3.89) /0.5]
  15. Simplify 2
    expr Simplify expression: 5ab-7+3ba-9
  16. Bottle
    cylinder_11 A company wants to produce a bottle whose capacity is 1.25 liters. Find the dimensions of a cylinder that will be required to produce this 1.25litres if the hight of the cylinder must be 5 times the radius.
  17. A swiming
    water2 A swiming pool holds 30000lt of water. How many gallons does it hold? 1 gallon= 4.55lt