10 inches.
No.
5 and a half inches for a adult.
generally a 4:1 ratio is suggested (25%)
The lenght of the penis doesn't matter as long as you'll get sperm in your vagina.
Diameter = 2*Radius. You should now be able to deal with this and similar questions.
Penises come in all shapes and sizes - don't worry about it!
No. Your penis starts to grow after about a year of starting puberty. It grows in lenght initially. After roughly 2.5 years it gets thicker.
how should i know none of you answered it
If you are 25 and your penis is 7, are you sure you're not really twelve? Get a life.
is was required but they also measured size of body parts like fingers, eye's penis's and hair lenght
The length is 20 cm.
should be around 2ft in lenght