1. Lt = Lo (1 + α x Δt)
Lt = panjang akhir (m, cm)
Lo= panjang awal (m, cm)
α = koefisien muai panjang (/°C)
Δt = perbedaan suhu (°C)
Lt = 100 (1 + 0,000019 x 100)
Lt = 100 x 1,0019
Lt = 100,19
Pertambahan panjang = Lt - Lo = 100,19 - 100 = 0,19 cm
2. At = Ao (1 + β x Δt)
At = luas akhir (m², cm²)
Ao = luas awal (m², cm²)
β= 2α = koefisien muai luas (/°C)
Δt = selisih suhu (°C)
At = (20 x 10) (1 + (2 x 0,000012) x 250)
At = 200 x 1,006
At = 201,2
Pertambahan luas = At - Ao = 201,2 - 200 = 1,2 cm²