2
12
36
5 x 8 = 40, so 40 tiles are in this rectangle.
4 times the number of tiles in the length of the rectangle.
2
60
12
25
36
Twelve.
5 x 8 = 40, so 40 tiles are in this rectangle.
one tiles
3*5 = 15 tiles.
4 times the number of tiles in the length of the rectangle.
at least 650 tiles with increments of 25 depending on how long a rectangle.
Any multiple of 4 will.