Jawabanmu

2014-05-25T13:39:14+07:00
Dike : panjang busur = 22cm
         jari-jari = 7cm, d=14
jwb :
p busur  = l juring
kel. ling     L ling
    22            x     
22/7 x 14    22/7x7x7
22 =   x  
44     154
44x = 3388
x = 3388 / 44
x = 77cm