Jawabanmu

2014-02-17T21:53:21+07:00
P. busur = L.juring/L.lingkaran x K.lingkaran
             = 10/3,14 x 4 x 4 x 3,14 x 8
              = 5 cm
2014-02-18T00:43:07+07:00
K=3,14x8=25,12 L=3,14x4x4=50,24 P busur = juring/luasx keliling P busur =10/50,24x 25,12 P busur =251,2/50,24 P busur =5 cm