It would be square feet which is a measure of area.
Three square feet would cover one square yard or 36 square inches.
If that is 2' x 4' it would cover 800 square feet. If it is 2" x 4" it would cover about 5.5 square feet.
Tiles that are two feet on a side cover 4 square feet. 378 of them cover 1512 square feet.
If you spread out the human brain it would cover about 4 square feet for a baby. It would cover slightly more than this for an adult.
Each 12 inch tile covers one square foot. That would mean they would cover 14 square feet.
It would cover 144 square centimeters.
64 square feet.
144
They were very tall and light colored. And some of them would cover there face.
You can't convert meters to square meters.
324
.375