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View Full Version : How do you figure out the cf of a sonotube?



ikpthegame
01-10-2008, 12:27 AM
well just like the title says how do i figure out the airspace inside of a sonotube?

BrianChia
01-10-2008, 12:29 AM
area of a circle x height

= (pi * radius^2) x height

jmanpc
01-10-2008, 12:29 AM
pi*r^2*h

:fyi:

ikpthegame
01-10-2008, 01:20 AM
ok after that how do i find the ft^3?

mlstrass
01-10-2008, 01:22 AM
http://www.quux.net/roo/diy/sonosub/sonocalc.html

twisztdauthorit
01-10-2008, 01:23 AM
honestly people, is it that hard? I believe they taught us this in grade school...

Railrocker
01-10-2008, 01:28 AM
If you cant do the math, fill it with packing peanuts then dump them into a square box and take your measurements.

BrianChia
01-10-2008, 01:30 AM
If you cant do the math, fill it with packing peanuts then dump them into a square box and take your measurements.

OK, but how do you figure ou the Cf of the square box? :)

Railrocker
01-10-2008, 01:33 AM
OK, but how do you figure ou the Cf of the square box? :)


Um...... Um....... I know this give me a minute........ Um.........


Ya know you probably have a point, if he cant do the math after being given the **** equation hes probably not going to run out and buy packing peanuts. :laugh:

BrianChia
01-10-2008, 01:42 AM
ok after that how do i find the ft^3?

OK the first thing you need to know is that there's 12 inches in a foot.

Once you grasp that, there are 12^2 sq. in. = 144 sq. inches in a square foot

If you can understand that then you'll see that there are 12^3 cu. in. = 1728 cu. in. in a cubic foot.

IamDeMan
01-10-2008, 07:51 AM
OK the first thing you need to know is that there's 12 inches in a foot.

Once you grasp that, there are 12^2 sq. in. = 144 sq. inches in a square foot

If you can understand that then you'll see that there are 12^3 cu. in. = 1728 cu. in. in a cubic foot.

Yes, but what it do?

skeptikal
01-10-2008, 08:01 AM
Lol it's called Volume....

I suggest you go back to grade school buddy, learn basic math all over again.

Immacomputer
01-10-2008, 02:02 PM
I guess there is always a need for garbage men... no need to go back to school; you're already qualified for that position!

PV Audio
01-10-2008, 03:42 PM
Y'all are mean. :laugh: Radius squared times pi times the height (IN INCHES) gives you the volume in cubic inches. Divide that by 1728 (one cubic foot) to get the volume in cubic feet.

Supergumby5000
01-10-2008, 03:46 PM
this thread gave me a good belly chuckle. thank you retarded OP

miker
01-10-2008, 04:34 PM
Y'all are mean. :laugh: Radius squared times the height (IN INCHES) gives you the volume in cubic inches. Divide that by 1728 (one cubic foot) to get the volume in cubic feet.

Ummm forgetting pie??? lol, you can't even do it.................

It's REALLY REALLY simple, how can that honestly not make sense...

(Radius x Radius) 3.14= area. Area x length = volume!!!! volume / 1728 = feet cubed

PV Audio
01-10-2008, 06:36 PM
Ummm forgetting pie??? lol, you can't even do it.................

It's REALLY REALLY simple, how can that honestly not make sense...

(Radius x Radius) 3.14= area. Area x length = volume!!!! volume / 1728 = feet cubedLOL whoops :laugh::emb: