At present the legal min. space per chicken is about the size of an a4 sheet of paper (law may change soon!) If it were me then I'd say about 3ftsq per chicken for the house and about 10ftsq per chicken for the run. For 100 chickens that works out at 300ftsq for the house 20x15ftsq and 1000ftsq for the run 20x50ftsq.
that would be zero they lay eggs
They lay eggs daily, but if you want chicks you have to have a male to fertilize the eggs.
chicks.
the chicks will be many
one egg
A parent chicken is commonly a female chicken known as a hen that has hatched chicks. The parent chicken will protect the young chicks at all times.
yes
Well that all depends on how many eggs that chicken can lay in a day. There isn't enough information.
No, if you just want eggs to eat you do not need a rooster. If you want to hatch chicks, you would require a male.
How much grammar use.
Chocolate chickens don't lay eggs.
A hen is female and a cockerel is a young male.