How many square tiles of side 9 cm will be needed to fit in a square floor of a bathroom of side 720 cm. Find the cost of tiling at the rate of $75 per tile.
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Answer:
area of square=720*720
Area of tile=9*9
No. of tile=(720*720)/(9*9)=80*80=6400
Cost of tile=6400*7.5=48000
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