If each section of the spinner has a theoretical probability of 1/4 being landed on, then you can expect the spinner to land on the green section 848(1/4)=212 times
I believe that she will need 56 square tiles. You get this by doing 7 times 8 which is 56. Then, since each tile is a one-foot square tile, you would need 56 tiles to cover the whole floor.
