Jawabanmu

2014-01-14T11:52:17+07:00
Keliling lingkaran = 2 π r

396 =  2 \pi r

2 .  \frac{22}{7} . r = 396

 \frac{22}{7} . r = 198

11 . r = 99 . 7

r = 9 . 7

r = 63

1 5 1