Jawabanmu

2014-04-19T10:09:52+07:00
ΔA = A - A₀ = βA₀ΔT
ΔA = 2α A₀ ΔT
= 2 (0,000014) · 2 · 3 · (55-25)
= 0,000028 · 6 · 30
= 0,00504 cm²
= 0,504 mm²
6 3 6
2014-04-19T13:54:30+07:00
Diketahui:Ao=2x3=6cm^2 ฿=2x0,000014=0,000028/°C deltaT=55-25=30°C ditanyakan:deltaA=...? jawab:delta L=Aox฿xdeltaT =6x0,000028x30 =0,00504cm.