exhaust size?

[JZA61]

i remember it lol, but if i was tlking to a computer i would work it out. you know what im tlking bout so.... yea. lol but still primary maths was hard!

[Draven]

I'm tired and cranky, deal with it

[river]

Hi,

355 divided by 113 gives a very close value to Pi. Accurate to a few decimal places IIRC.

seeyuzz
river

[brett_celicacoupe]

only 6 decimal places

[LeeRoy]

As for the cost of an exhaust, a decent 3" from turbos to exhaust tip will prob set you back AUD$1000 and upwards depending on the quality of materials used ie mild steel, cheap cats and mufflers, no. of flanges (if any) and so on.

I'm unsure on the current exchange rate in the asshole republic so i dunno how much it would cost you over there.

- LeeRoy

[infotechplus]

for people who dont know what Pi is,

16 cm circumphrence (i assume this is supposed to say circumference) is 2 inches diameter.

pipe/rod/etc is never measured in cm, because its a stupid measurment, and it is never specified in radius because you cannot measure radius.

The formula is Circumference (C) = pi (22 divided by 7) times R squared

So ...

Divided 32cm by 2.54 to get the correct unit of measurement = inches

that's 12.6 inches corrected to two decimal points.

Now, 12.6 = 22/7 x R2 or

12.6 x 7 = 22 x R2 or

88.2/22 = R2. You then end up with roughly

R2 = 4 or R = the square root of 4, with a final result

2 inches

Cheers

And who said High School Math was a waste of time. Commerce maybe but not Math.

Peter

[brett_celicacoupe]

youre joking right???????



firstly, pi is NOT 22/7

22/7 = 3.142857143

pi = 3.141592653589793238462643383279502884197169399375 10582097494459230781640628620899862803482534211706 79821480865132823066470938446095505822317253594081 28481117450284102701938521105559644622948954930382 0...


secondly, area of a circle = pi*R^2

thirdly, the circumference is pi*D or 2*pi*r


and if you dont believe me,

In other words:

Length of a circle's circumference is:


Area of a circle is:

http://en.wikipedia.org/wiki/Circle

[infotechplus]

youre joking right???????



firstly, pi is NOT 22/7

22/7 = 3.142857143

pi = 3.141592653589793238462643383279502884197169399375 10582097494459230781640628620899862803482534211706 79821480865132823066470938446095505822317253594081 28481117450284102701938521105559644622948954930382 0...


secondly, area of a circle = pi*R^2

thirdly, the circumference is pi*D or 2*pi*r


and if you dont believe me,





http://en.wikipedia.org/wiki/Circle

Ouch

I never said I was any good at it. I stand corrected.

Peter

Ps. But don't I get marks for getting the right answer?

[river]

Hi,

But don't I get marks for getting the right answer?

Nope. You've embarrassed yourself and put these forums into ill repute. It's gonna take us months to recover from this traversty!

seeyuzz
river

[kingmick]

And who said High School Math was a waste of time. Commerce maybe but not Math.

Peter

You proved it was a waste of time! lmfao dont you hate that!

[Draven]

interestingly enough, you came to the right answer because he just happens to have the only diameter exhaust where 2r = r^2

so you would get 1 mark for getting the correct answer through sheer luckj, and lose lots of marks for butcheriung the science of mathematics

[Mr Ed]

BUT........what I dont understand is how he started with 32cm circumferrance??? Wasnt the original measurement 16cm??

[brett_celicacoupe]

so your saying;

circumference = pi*R^2


.....sure thing

[Mr Ed]

Damn someone read my post before I could get my ninja edit in!

Sorry mate, for some reason I often seem to have brain fade all up until I read my post AFTER I have actually hit submit. In this case I confused area with circumferrence (must be contagious)

[brett_celicacoupe]

i was about to give you rep for being funny anyhow