Jawabanmu

2014-05-19T07:53:35+07:00
2014-05-19T07:56:35+07:00
A = 100 cm²
ΔT = 30 C = 30 K
a = 24 x 10⁻⁶ / K
ΔA = A.a.ΔT = 100 x 24 x 10⁻⁶ x 30 = 720 x 10⁻⁴ cm² = 7,2 x 10⁻² cm²
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