November 2018 2 67 Report
Sebatang kaca pada suhu 18°c,panjangnya 20 cm.jika koefisien muai panjang kaca 0,000009/°c,maka panjang kaca tersebut menjadi 20,018 cm pada suhu?
a.118° c b.180 °c c.18°c d.108°c

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