Here's an idea my partner suggested for gauging size...
Multiply the length by thickness (as measured with a tape measure wrapped around the thickest part of the cock).
He's 9 X 7 which gives him a "mass factor" of 63.
I'm 8 x 5; so my mass factor is only 40.
Other examples: say you're (or you know someone who is) 10" x 5". You can conclude that it's a long dick, but it really doesn't have as much "mass" as a dude with a cock that's (only) 8" X 7" (mass factor: 50 vs. 56). While size may not be everything "mass" definitely is something...think about it the next time someone says they're 10"!
Why use a formula for the area of a square to measure the volume of a cylinder?
Let's assume your cock is a cylinder. Its volume would be the length and the area of the base, which is pi x r^2, r being the radius. You know the girth, which is the same as the circumference, which is pi x 2 x r.
Girth = circumference = pi x 2 x r.
So, r = circumference/(2 x pi). For our purposes here, let's estimate pi = 3.
Volume of a cylinder = Area x length = (circumference^2)/12 x length.
If you're 9" x 7", like the aforementioned gentleman : Volume = (7^2)/12 x 9 = 49/12 x 9 = 4.1 x 9 = 36.75 (cubic inches).
An average cock would be, say 6" long x 4" girth: Volume = (4^2)/12 x 6 = 16/12 x 6 = 8 cubic inches.
That was easy, wasn't it?
