Jawabanmu

Jawaban paling cerdas!
2014-02-13T13:10:04+07:00
K = 2 .  \pi . d
50 . 31,4 = 3,14 . d
1570 = 3,14 . d
1570 : 314/100 = d
500 = d
250 = r 


gitu??
1 5 1
2014-02-13T14:28:21+07:00