How many tiles whose length and breadth are 12 cm and 5 cm respectively will be needed to fit a rectangular region whose length and breadth are 100 cm and 144 cm respectively.
For rectangular tile:
Length = 12 cm
Breadth = 5 cm
So, area of the tile = 12×5
=60 cm2
For rectangular region:
Length = 100 cm
Breadth = 144 cm
So, area of the tile = 100×144
=14,400 cm2
Let n rectangular tiles are required to completely cover the rectangular region. Then,
Area of n rectangular tiles = Area of the rectangular region
n×60=14400
n=1440060
n=240
Hence, 240 tiles are required to cover the entire rectangular region.