I will add this from another post of mine that did not get a good responce.
For those who wonder as I did.
Volume of a Testicle
V=4/3 π abc
If inches are used multiply X 16.38 for cubic centimeters
π=3.1416
a=1/2 length
b=1/2 depth
c=1/2 heigth
Average is 16cc to 18cc
Example measurements 2.875"x1.75"x1.625"
4/3π 1.437x.875x.812= 4.277 cubic "
4.277x16.38= 70cc