Conversation so far:
where is the asteroid belt located in our solar system
The asteroid belt is a region of space between the orbits of Mars and Jupiter where most of the asteroids in our Solar System are found orbiting the Sun.
what is the asteroid belt made of
Astronomers think that the asteroid belt is made up of material that was never able to form into a planet, or of the remains of a planet which broke apart
what are the asteroids in the asteroid belt made of
The asteroids in the asteroid belt come in a variety of sizes. Some are very small, less than a mile across, while others are quite large.
what is the largest asteroid in the asteroid belt called
The largest asteroid is called Ceres.

Question: how big is the body
Self-contained rewrite: how big is ceres