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the lenght of rectangle, `5.4 m=540 cms`
width: `4.05 m= 405 cm`
since the length of tiles are `15 cm `to cover all the lenght:
`540/15=36 ` tiles, instead to cover all width `405/15=27` tiles.
then the whole area, will be covered by a number `N` of tiles by product tiles per width x tiles per lenght will be like.
So `N=27 xx 36= 972` tiles.
The area of rectangular floor= length x bredth
`=5.4xx4.05 sq m`
`=21.87 sq m`
length of square tile= 15cm= .15 m
Area of square tile= (.15)^2 sq m
=0.0225 sq m
Thus number of square tiles required= Area of the floor/area of the tile
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