How many square tiles of side 25 cm are required to cover the floor of a room whose area is 20 m2, without any tiles overlapping?
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Answer:
320 tiles
Step-by-step explanation:
side of square= 25
area of square = side × side = 25×25= 625cm
area of room = 20m^2 = 20×10000= 200000cm^2
no of tiles = area of room/area of 1 tile
= 200000/625 = 320 tiles
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