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The area of the square is 169 m squared

The area of the square is 169 m squared-example-1

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The flagstones are 0.8*0.5=0.4 square meters. 169/0.4=422.5 tiles. 422.5 tiles multiplied by 1.2 for waste is 507 tiles, the amount that Liam should buy.
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User Roman Gudkov
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