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Dik : A(mula2) = 0,5 m²
α = 225 x 10 pngkt -7/ C diproleh β = 450 x 10 pngkt -7/ C
Δt = 90 drjt C
Dit: A(akhir)?
A (akhir) = A (mula2) . (1 + β . Δt)
= ( 0,5) . (1 + 450 x 10 pngkt -7 . 90)
= 0,5 + 20250 x 10 pngkt -7
= 0,502025 m²