Question

A glass bottle of interval volume is treated from 20°C - 50°C. If the linear expansivity of the glass is 9×10^–4, the volume of the bottle as 50°C is?

Answer 1

$$V'=V_0(1+\alpha\Delta T)^3\\ V'=20000(1+9\cdot10^{-6}(50-20))^3\\=20016.2\ cm^3$$