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L = 30 * 15
= 450 m²
Luas satu keramik
L = 30 * 30
= 900 cm²
= 9 m²
banyak keramik dibutuhkan
450⁄9
50 keramik
Ukuran Lantai = 30x15 = 450m=45000cm
Penyelesaian = 45000:900= 50 Keramik Yang dibutuhkan. Semoga Membantu ^_^