Banyak ubin
= 25m² : 25cm²
= (25 × 10.000) : 25
= 250.000 : 25
= (250.000/25) : (25/25)
= 10.000 : 1
= 10.000 buah
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Banyak ubin
= 25m² : 25cm²
= (25 × 10.000) : 25
= 250.000 : 25
= (250.000/25) : (25/25)
= 10.000 : 1
= 10.000 buah