Jawabanmu

2014-03-18T19:37:05+07:00
Dik :
Lo = 500 cm
a = 0,000045 / °c
AT = 75-50 = 25 derajat
jwb :
L = Lo (1 + a . AT)
L = 500 (1 + 0,000045 . 25)
L = 500 (1 + 0,001125)
L = 500 + 0,5625
L = 500,5625 cm atau 5,005625 m