I'm not sure what you are asking here... the body is obviously the squid itself...
a giant squid is very long
The mantle of a squid is to cover and protect the squid's body.
Almost all of the organs in a body have a function. A squid's liver helps in absorbing the food consumed by the squid.
on the outside of the body
no
A squid is a solid because it has flesh. But it can also be a liquid because of the ink that comes out from its body.
Well, the mantle is esentiallly the head, and body, of the squid. It has all the organs and on the bottom is the beak.
somewhere on the body
Squid are phylum mollusca. They are marine cephalopods and are part of the invertebrate family. Ocean dwelling mollusks move or swim by jet propulsion. They propel themselves by ejecting water from their body. The squid ejects water from a cavity within its body.
Red with black dots
The bottom of the body.