If a room is 196 square feet how many 12 x12 carpet tiles do you need?

Answer 1

A square foot IS 12 inches by 12 inches.

So unless the room is odd-shaped (not square or rectangular)

you should be able to do it with 196 carpet tiles.

You should add 5 to ten percent for mess-ups.

So if it is not a monetary issue, get 210 or so.