competing with friends

do you measure each other, or do you trust each other??

we trust each other, only seen each other through boxers...

hm, interesting
not following though. He has the thicker one?
How are you computing volume. (P.S. you need calculus to do that)
Can you put this into inches?
Finally, .5 cm is not a big diffference. You each could vary between that easily at different times of the day.

I wish I could compare against friends as I know I would be smallest and would love to be teased about it!

he's 0.5cm girthier than me. Check out this site: The Visualiser.net - Compare your cock! you can input your length and girth and it estimates volume. Turns out to have the same volume as him I'd need to be at least half an inch longer because a girth gets squared in volume...

I'm naive about certain things, MattBrick.
Why wouldn't algebra do the trick?

Silly Rubi...this is clearly a geometry problem

Good question:

If you use geometry to find this kind of volume as a lot of people on here do, you know are risking being way off. A penis is not a cylinder, and it is definiatly not a rectangular solid. (You need to at least use pi!)

Algebra would be better, you are right. Give me a formula, let's see how it works.

Calculus on the other hand is best. I bet your Algebra formula is Calculus even if you didn't realize it. Finding the volume of a penis is like, say finding the volume of an irregular shaped lake. Make sense?

Yesssss, but ...
You're going to wind up doing multiplication, right, rico?

Yesssss, but ....
No one will really go to that, um, length.
They'll treat it like a cylinder and take length and diameter (which will be tricky, and they'll probably take the widest part, which is a cheat), insert pi, and voila.
You must be quite the perfectionist, MattBrick ... and quite the truth teller, because your method would give a smaller, though more accurate, volume.

Displacement (i.e. Archimedes)

There really is no need for Algebra, Geometry and Calc... just get the right chick (or guy) who likes to give head (or even ME if I'm REALLY in the right mood) and we can have a decissive judgement immediately!! :)

Better yet...put both your dicks on the table and measure them...contest over!!

Regarding comparing sizes and calculating volume to determine biggest, I think a straight foward formula for the voulme of a cylinder is most appropriate, IF one takes at least three to five girth measurements from base to crown and then averages those measurements to obtain an average girth measurement. This pretty much takes care of the various irregularities of shape between penises.

So, here it is:

average girth (circumference) divided by 3.1415 (pi); this is the diameter;

diameter divided by 2; this is the radius;

radius squared (radius times radius) and then times 3.1415; this is the area of a circle, or cross section of a cylinder;

area of a circle times height (or length) of the cylinder; this is the size of the cylinder in cubic units, whether inches or centimeters.

So, for example:

Small 5x4 6.36 cubic inches
Modest 5.5x4.5 8.86
Average 6x5 11.93
Large 7x5.5 16.85
Hung 8x6 22.91
Very Hung 9x6.5 30.26
Horse Hung 10x7 38.99

An illustration on the power of girth versus length:

8x5 15.91 cubic inches
7x6 20.05
6x7 23.39

So there you have it.

Very true.
To add to that, the best idea would be to take 2 of those 5 measurments at the widest and narrowest points, and the rest elsewhere.
For it to work, everyone would have to do it one way in any case.
It still might not prove acurate for guys who have a "torpedo shaped" - thicker in the middled- and those with kindergarten tree shaped - disproportionate sized head.
These are difficulties you would run into anytime you are measuring.

I think I've been spending too much time on here.