Question

How many tiles whose length and breadth are 12cm and 5cm will be needed to fit in a rectangular region whose length and breadth are 100cm and 144cm

Answer 1

Area of  one tile = 12 x 5 = 60 cm^2

Area of  rectangular region = 100 x 144 = 14400cm^2
 
Number of tiles = Area of rectangular region/ Area of one tile 
                         = 14400/60 = 240         
Number of titles = 240 tiles.
 
 Hope this helps :-)

Answer 2

Hi friend,

First calculate the area of tile then floor.


Length of one tile=12cm
Breadth of one tile=5cm
Area of one tile=L*B
=12*5
=60cm^2

Length of the rectangular region=100cm
Breath of the rectangular region=144cm
Area of the rectangular region=L*B
=100*144
=14400cm^2

Then divide them to see how many tiles are needed to cover the floor=Area of rectangular region/area of tile

= 14400/60
=240

Hence,240 tiles are needed to cover the rectangular region with tiles.


Hope it helped you........................