Respuesta :
Nina will need 3 columns,3 rows and she will use 9 squares in all.
Answer:
9 tiles.
Step-by-step explanation:
It is given that the shape of covering area is square, this means all sides are equal. If Nina fits 3 color tiles across the top of the square, it means each side would be the same. Nina use 3 columns and 3 rows to fill the square.
To fill the square area Nina needs 3 × 3 = 9 tiles
Nina would use 9 tiles in all.