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luas 2 = 30 x 30 = 900 cm = 9 meter
banyak keramik yang dibutuhkan = luas 1 : luas 2
= 67,5 : 9 = 7,5
= 7,5 m x 9 m
= 67,5 m² = 675.000 cm²
Luas Keramik = 30 cm x 30 cm
= 900 cm²
Banyak Keramik = 675.000 ÷ 900
= 750 keramik
^^Semoga Membantu dan Maaf Kalau Salah^^