Jawabanmu

2013-12-14T06:06:22+07:00
Luas = 2.phi .r (r + t )
        = 2. 22/7 . 14 ( 14 + 8 )
        = 2. 22 .2 ( 22 )
        = 1936
2013-12-14T08:49:50+07:00