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Mathematics 7 Online
OpenStudy (anonymous):

A kitchen floor is to be tiled, and the dimensions of the floor are measured as 6.4 X 4.3 metres, accurate to 1 dp. Tile costs $ 0.25 per square cm. Calculate the maximum amount of money that will be spent to tile the floor.

OpenStudy (apoorvk):

Very well. So can you find the area of the floor? (Hint: l x b) Notice that the units of area and cost per unit area are different.

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