Tolong dibantu plisss

jawab
r = 6
a= 30
Kelilingb  ling = 2 (3,14)(6) = 37,68
panjang busur Minor AB = 30/360 x K ling = 1/12(37,68) = 3,14
panjang busur mayor =  37,68 - 3,14 =  34,54