A room measures 12m by 9m. The floor of the room is to be covered by marble tiles measuring 45 cm by 30 cm. How many tiles are needed?

We have,length of the room = 12 m = 1200 cmbreadth of the room = 9 m = 900 cmNow, area of floor of room = length × breadth = 1200×900 = 1080000 cm2Now, length of each tile = 45 cmbreadth of each tile = 30 cmArea of each tile = length × breadth = 45×30 = 1350 cm2Now, required number of tiles = area of floorarea of each tile  = 10800001350 = 800

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i guess 800 tiles
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