October 2018 1 58 Report
Sekeping logam panjangnya 80 cm dan lebarnya 40 cm dipanaskan dari 20 c sampai 140 c. jika koefisien miaia panjang alumunium adalah 2,5 x 10 pangkat -5 /c , berapakah luas keping alumunium setelah dipanaskan ?

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