I think it is called a tee but that also holds the Golf ball in place until you go to hit it with the golf club.
Another golfball!
The density of golfball is less then density of water
Yes
Sextant.
a golfball!
== == == ==
Surface area of a sphere (the golfball) = 4*pi*radius2 square cm
Golfball
Alot
275 ml
A micrometre can be used.
Usually for plotting a place on a map. Widely used in marine navigation.