Jawabanmu

2014-03-01T08:33:06+07:00
2014-03-01T08:43:19+07:00
K = 94,2
π = 3,14
jawab :
K     = π d
94,2 = 3,14 . d
    d = 94,2/3,14
   d = 30
LO = π r²
     = 3,14 . 15 . 15
     = 706,5
1 5 1