# Answer to Question #10744 in Analytic Geometry for mycah

Approximately how many 20cm x 20cm square tiles are needed to cover a square floor whose side is 16m?

S1=20*20=400 cm^{2}=0.04 m^{2}

S2=16 m*16 m=256 m^{2}

N=S2/S1=6400

Answer: N=6400 tiles

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