c-towns Posted November 21, 2003 Report Share Posted November 21, 2003 Its been so long since I've had to figure out these volume calculations, can I get some help here? I have a piece of tubing that is 30 inches long and has a diameter of a 1/4 inch, the wall of the tubing is 1/8 of an inch thick. I need to know how much liquid the tube would hold if it was full. Thanks in advance. Link to comment Share on other sites More sharing options...
bradm Posted November 21, 2003 Report Share Posted November 21, 2003 Try drawing some pictures, particularly of the cross-section of the end of the tube, which will be two circle, one inside the other: the outer circle is the outside of the tube, the inner circle is what's inside the tube's wall. You need to calculate the area of the inside of the tube, not including the wall of the tube. Once you know the area, multiply it by the length of the tube, and you've got the volume. Aloha, Brad Link to comment Share on other sites More sharing options...
c-towns Posted November 21, 2003 Author Report Share Posted November 21, 2003 I remember the formula now, pie r squared multiplied by the heighth. Link to comment Share on other sites More sharing options...
c-towns Posted November 21, 2003 Author Report Share Posted November 21, 2003 I'm confused Link to comment Share on other sites More sharing options...
Velvet Posted November 21, 2003 Report Share Posted November 21, 2003 Ohhh, you are soooo close.... Link to comment Share on other sites More sharing options...
c-towns Posted November 21, 2003 Author Report Share Posted November 21, 2003 Help a brother out... Link to comment Share on other sites More sharing options...
Velvet Posted November 21, 2003 Report Share Posted November 21, 2003 I have an idea. Why don't you fill the tube with water, and then empty it into a measuring cup? Then you can check your calculations. What do you need to know this for anyway? Link to comment Share on other sites More sharing options...
c-towns Posted November 21, 2003 Author Report Share Posted November 21, 2003 I don't have the tube, I have approximate dimensions. I need to know this because this tube broke and it was full of liquid mercury, I need to know how much mercury was lost in order to attempt to recover it so people don't get into trouble. Link to comment Share on other sites More sharing options...
Velvet Posted November 21, 2003 Report Share Posted November 21, 2003 Ouch. I think you're asking the wrong people. Good luck. That's a lot of mercury. But I guess you know that much already. Where are you located, anyways? Link to comment Share on other sites More sharing options...
c-towns Posted November 21, 2003 Author Report Share Posted November 21, 2003 Calgary, whats it to ya. Link to comment Share on other sites More sharing options...
bradm Posted November 21, 2003 Report Share Posted November 21, 2003 Try: http://www.google.com/help/features.html#calculator Aloha, Brad Link to comment Share on other sites More sharing options...
c-towns Posted November 21, 2003 Author Report Share Posted November 21, 2003 24mL it is. Thanks for nothing. Link to comment Share on other sites More sharing options...
Velvet Posted November 22, 2003 Report Share Posted November 22, 2003 Just wondering if I should be drinking bottled water or not... Sorry for invading this thread. I was being taunty because I thought you were trying to get us to do your homework for ya. Link to comment Share on other sites More sharing options...
c-towns Posted November 22, 2003 Author Report Share Posted November 22, 2003 What is 1/8 of an inch on a calculator? I feel stupid today. Link to comment Share on other sites More sharing options...
bradm Posted November 22, 2003 Report Share Posted November 22, 2003 quote:Originally posted by c-towns: What is 1/8 of an inch on a calculator? I feel stupid today. 1 = 1.000 1/2 = 0.500 1/4 = 0.250 1/8 = 0.125 Aloha, Brad Link to comment Share on other sites More sharing options...
Tungsten Gruvsten Posted November 22, 2003 Report Share Posted November 22, 2003 uh 1 divided by 8 = .125 also, you are looking for the volume the pipe will hold, the wall thickness of the tube doesn't matter. Link to comment Share on other sites More sharing options...
Guest Low Roller Posted November 22, 2003 Report Share Posted November 22, 2003 I deleted my original post, but it seems as though my initial instinct was right. If your outer diameter is 1/4, to calculate your inner diameter you gotta subtract the wall thickness on both sides of your outer diameter: 1/4 - (1/8 x 2)= 0 Your tube is not hollow. Are you sure it's a PVC tube and not an inanimate carbon rod? Link to comment Share on other sites More sharing options...
Guest Low Roller Posted November 22, 2003 Report Share Posted November 22, 2003 quote:Originally posted by Tungsten Gruvsten: also, you are looking for the volume the pipe will hold, the wall thickness of the tube doesn't matter. Of course it does dude. Water can't flow through solid, therefore you have to subtract the thickness to get the actual volume that the water can fill. Link to comment Share on other sites More sharing options...
bradm Posted November 22, 2003 Report Share Posted November 22, 2003 quote:Originally posted by Low Roller: I deleted my original post, but it seems as though my initial instinct was right. If your outer diameter is 1/4, to calculate your inner diameter you gotta subtract the wall thickness on both sides of your outer diameter: 1/4 - (1/8 x 2)= 0 Your tube is not hollow. Are you sure it's a PVC tube and not an inanimate carbon rod? Or it's the answer to the question, "Dude, why doesn't this bong work?" Aloha, BRAD (Bedevilling Recalculations: Area, Diameter) Link to comment Share on other sites More sharing options...
c-towns Posted November 22, 2003 Author Report Share Posted November 22, 2003 I don't have the tube in front of me, I'm trying to remember the measurements while looking at a tape measure. Outside diameter = 1/2 inch Wall = 1/8 inch Therefore the inside diameter is a 1/4 inch making the radius 1/8 of an inch, so, pie x .125 squared x 30 = 1.472619 (would this be mL) Link to comment Share on other sites More sharing options...
Guest Low Roller Posted November 22, 2003 Report Share Posted November 22, 2003 "Outside diameter = 1/2 inch" Ah, that makes a little more sense. Link to comment Share on other sites More sharing options...
bradm Posted November 22, 2003 Report Share Posted November 22, 2003 quote:Originally posted by c-towns: I don't have the tube in front of me, I'm trying to remember the measurements while looking at a tape measure. Outside diameter = 1/2 inch Wall = 1/8 inch Therefore the inside diameter is a 1/4 inch making the radius 1/8 of an inch, so, pie x .125 squared x 30 = 1.472619 (would this be mL) Since all the quantities that were multiplied together were in inches, it's in^3 (cubic inches). Aloha, Brad Link to comment Share on other sites More sharing options...
c-towns Posted November 22, 2003 Author Report Share Posted November 22, 2003 does 24mL sound right? Link to comment Share on other sites More sharing options...
c-towns Posted November 22, 2003 Author Report Share Posted November 22, 2003 I'm about as sharp as a marble today. Link to comment Share on other sites More sharing options...
c-towns Posted November 22, 2003 Author Report Share Posted November 22, 2003 Anyone confirm this? Link to comment Share on other sites More sharing options...
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