



 
Hi Rochelle, Suppose this is a much smaller room that needs only 9 tiles. In this case the floor would be 3 tiles long by 3 tiles wide. Since each tile measures 200 mm on a side the floor is 3 × 200 = 600 mm by 600 mm. What is the area of this small room in mm^{2}? What are the dimensions and area of the bedroom floor that requires 625 tiles? Penny  


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