It is a 3 dimensional shaped object
water displacement
I am not positive but i think that a regular shaped object can be measured and an irregular can not Hope this helps :D
a can of soft drink is shaped like a cylinder
method usede to figure the volume of an irregular shaped object
A ring shaped coral reef is called an Atoll.
Atolls
The 33 ring-shaped bones of the spine are called the vertebrae.
It is a 3 dimensional shaped object
A ring shaped coral island found for from land is called an atoll.
a molecule, shaped like a ring
atolls
Atoll.
Planetary Nebula
Yes, ring galaxies are actually ring-shaped, with a circle-like appearance.
it is called ice ring island
Trachea is bounded by c-shaped ring to provide it support and flexibility