Jawabanmu

2014-03-30T11:41:16+07:00
1. L = s X s
    144 = s X s
     144 = s2(Kuadrat)
      s2(Kuadrat) = 144
      s = 12 dm

     K = 4 X s
     K = 4 x 12
     K = 48 dm

2. ?
2014-03-30T12:06:03+07:00
S × s = 114 s = akar 114 keliling = 4s = 4 akar 114 2.