10 million
2
25 * 20 = 500 tiles
It depends on how many tiles long you wish to make your rectangle. Once that is determined, multiply your width by your length and you will have the amt of tiles needed. ie: 3 tiles wide and 4 tiles long= 12 tiles
3*5 = 15 tiles.
12
60
smaller tiles would make it look bigger
Twelve.
18
25
36
Two tiles can only make one rectangle.