Tiles

From how many tiles, 20 cm by 30 cm, we can build a square of maximum dimensions if we have maximum 275 tiles.

Correct answer:

n =  216

Step-by-step explanation:

20 cm = 2   10  cm 30 cm = 3   10  cm S = ab = 2 x 3 x   100 = 6x2   100 cm2  6x2 = 275 x1=275/66.77 x=x1=6.77=6  n=6 x2=6 62=216



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