This is the basic and conceptual question from real numbers chapter in which we have given the length and breadth of a room and we have been asked to find the required number of square tiles for paving the room.

Kindly solve the above problem in detail

RS Aggarwal, Class 10, chapter 1B, question no 23

## Given, lengthÂ =15Â mÂ 17Â cm=1517Â cm

and widthÂ =9Â mÂ 2Â cm=902Â cm

Area of ceilingÂ =(1517Ã—902)

or,Â Aceilingâ€‹=1368335Â cm2.

The dimension of square tile required to pave the ceilingÂ =HCF ofÂ {1517,902}=41

Area of tileÂ =1681Â cm2

Number of square tile requiredÂ =Aceilingâ€‹â€‹/Aone tile=(1368334â€‹/1681)=Â 814