Jawabanmu

2014-06-11T19:23:32+07:00
Rumus: Lo + Lo(delta t x a)
400 +400 ( 60 x 0,000011)
=400 + 0,264
=400,264
2014-06-11T19:25:30+07:00
Dl=Lo.alpah.DT
Dl=4.11*10^-6.20
Dl=880.10^-6

880*10^-6=Lo.11*1^-6.80
Lo=1 meter