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2. The length of a hall is 8 m and its width is 13.5 m. Find the least number of square tiles each of 25 cm recuired to cover the floor [ [3] |
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Answer» Length of HALL =18m=1800cmBreadth of hall =13.5m=1350cmWidth of margin =1.5m=150cmNow, EFGH is the required AREA of hall flow to be filled.Now, length of floor =1800−(2×150)=1500cmBreadth of floor =1350−(2×150)=1050cm∴ Area EFGH=1500×1050=1575000cm2Area of 1 square tile =25×25=625cm2Number of tiles =Areaof1tileAreaEFGH=6251575000=2520 |
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