Jawabanmu

2014-05-11T20:59:21+07:00
ΔL = α.Lo.Δt
Lt-Lo = α.Lo.60
3,00091-3=α.3.60
0,00091 = α.180
0,00091/180 = α
5,0556 x 10^-6 / 'C
1 5 1