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A rectangular floor which measures 15m*8m is to be laid with tiles measuring 50cm*25cm. find the no of tiles required . further if a carpet is laid on a

floor so that a space of 1m exist between its edges and the edges of the floor what fraction of a floor is uncovered.



Area of the floor =15m *8m


=1200000 sq. cm

area of one tile=50*25=750 sq. cm

No. of tiles required=1200000/ 750


space between each edge=1m

therefore the dimensions of the carpet will be (15-2)*(8-2)

area of carpet=l*b


=78 sq.m

area of floor uncovered=120m-78m


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