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ukuran lantai = 3 x 2 m = 300 x 200 cm
ukuran keramik = 25 x 25
maka :
Luas lantai = 300 x 200 = 60.000 cm²
Luas keramik = 25 x 25 = 625 cm²
maka jumlh keramik = 60.000/625 = 96 buah
= 60000/ 625
=96