How many slabs each with side 90 cm are needed to cover a floor of area 81 sqm?
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Answer:
Step-by-step explanation:
area of slabs= area of floor
area of one slab: 8100 cm2
total area of floor: 81 sqm= 810000 sqm
total tiles needed= area of floor/area of one tile
answer: 100 tiles
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