SOLUTION: a 7 foot long piece of pipe has an outside diameter of 3.50 inches. and the volume of in the pipe is equal to 449 inches cubed(449in^3). find the wall thickness?

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: a 7 foot long piece of pipe has an outside diameter of 3.50 inches. and the volume of in the pipe is equal to 449 inches cubed(449in^3). find the wall thickness?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1095828: a 7 foot long piece of pipe has an outside diameter of 3.50 inches. and the volume of in the pipe is equal to 449 inches cubed(449in^3). find the wall thickness?
Found 2 solutions by Alan3354, addingup:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
a 7 foot long piece of pipe has an outside diameter of 3.50 inches. and the volume of in the pipe is equal to 449 inches cubed(449in^3). find the wall thickness?
--------
ID of the pipe = 2r
---
Vol+=+pi%2Ar%5E2%2Ah+=+pi%2Ar%5E2%2A84+=+449
Solve for r.
ID = 2r
Subtract from 3.5

Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
OD Ø = 3.5
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
7 x 12 = 84 inches long
449/84 = 5.35
ID (Internal Diameter): 2 x (5.35/Pi) = 3.4
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3.5 - 3.4 = 0.1; 0.1/2 = 0.05 inches is the wall thickness of the tube.
NOTE: This is a very thin tube, 0.05 is about the thickness of printing paper