Volume Tube Calculator

Interpreted per the measurement selector above.
For a horizontal tank or a pipe this is the run length.
Give this or the wall thickness for a hollow cylinder.
Radial wall thickness; the bore is the outer radius minus this.
Material density for a solid/hollow body, or contents density for a tank.
Internal capacity
1,256.637061
Cylinder Calculator
Volume of material
706.858347
Lateral (curved) surface area
2,827.433388
End-face area
7.068583
Total surface area
2,841.570555
Outer radius
2.5
Inner radius
2
Outer circumference
15.707963
Material volume (cubic metres)
0.011583 m3
Capacity (cubic metres)
0.020593 m3
Capacity (litres)
20.592592 L
Capacity (US gallons)
5.439987 gal
Capacity (cubic feet)
0.727221 ft3
Total surface area (square metres)
1.833268 m2
Worked out from Weisstein, Eric W. "Cylinder." MathWorld — A Wolfram Web Resource and 2 other sources.

How this is worked out

7 steps
  1. Outer radius R = 2.5 in, height/length h = 100 in
  2. Inner radius r = 2 in
  3. Material volume V = pi (R^2 - r^2) h = pi (6.25 - 4) x 100 = 706.85835 in^3
  4. Bore capacity = pi r^2 h = 1256.6371 in^3
  5. Curved surface = 2 pi R h + 2 pi r h = 2827.4334 in^2
  6. Total surface = curved + 2 x end face = 2827.4334 + 2 x 7.0685835 = 2841.5706 in^2
  7. Asked for the internal capacity: pi x 2^2 x 100 = 1256.6371 in^3 = 20.592592 L = 5.4399873 US gal.

Results are general information, not financial, tax, legal, medical or engineering advice.