Any multiple of 5 will do.
2
4 times the number of tiles in the length of the rectangle.
How long is the rectangle? If the rectangle is only one tile long, then it will take 20 tiles.
36
at least 650 tiles with increments of 25 depending on how long a rectangle.
Five. If one + is one tile, +++++ is five tiles long.
2
4 times the number of tiles in the length of the rectangle.
How long is the rectangle? If the rectangle is only one tile long, then it will take 20 tiles.
25
36
one tiles
at least 650 tiles with increments of 25 depending on how long a rectangle.
5 x 8 = 40, so 40 tiles are in this rectangle.
60
12
Twelve.