Jawabanmu

2014-03-16T14:36:34+07:00
D1
p = 5m
l =2m
A1=5*2
   =10 m2
A2=10,0036 m2
ΔA=A2-A1=10,0036-10
     0,0036
T2 =75°C
d2
α
d3
α= \frac{1}{2}

β= \frac{ΔA}{A1.ΔT}

  = \frac{0,0036}{10.75}

  =0,0036
      750
  =0,0000048/°C
α = \frac{1}{2}

   = \frac{1}{2} .0,0000048

   =0,0000024/°C

Semoga membantu.......
2014-03-16T16:55:49+07:00
p = 5m
l =2m
A1=5*2
   =10 m2
A2=10,0036 m2
ΔA=A2-A1=10,0036-10
     0,0036
T2 =75°C

β=

  =

  =0,0036
      750
  =0,0000048/°C
α =.β

   =.0,0000048

   =0,0000024/°C