The answer would be 600 I think
If 1 meter= 100 cm then you would convert 9 and 6 to 900 and 600. Then if each tile is 30 centimeters then you would do 900/30= 30 and 600/30= 20. Then to find the amount for the whole area you have to do 20 x 30= 600.
I hope this helps :)
