Jawabanmu

2014-06-10T20:28:50+07:00
V = 1/3 luas alas x  t
  = 1/3 3.14 x 5 x 5 x12
   = 942

luas permukaan = 3,14 x 5 x 13 + 3,14x5x5
                         = 282,6
1 5 1