Jawabanmu

2014-05-19T03:08:34+07:00
180' = 60' + 3x' + 5' + 5x' + 5
        = 70' + 8x'
8x' = 180' - 70' = 110'
x = 110/8
   = 13,75
B = 3x + 5
   = 3(13,75) + 5
   = 46,25'