Question

Tlng kerjain nomor 8 ya ,thx :-)

Answer 1

Pecahan = 30/360
               = 1/12
r = 18 cm
R = 18+6 = 24 cm
kliling = 2(bd) + busur ab + busur cd
          = 2(6) + ( 1/12 x 2 x π x r) + ( 1/12 x 2 x π x R)
          = 12 + ( 1/6 x 3,14 x 18) + ( 1/6 x 3,14 x 24)
          = 12 + ( 3,14 x 3) + ( 3,14 x 4)
          = 12 + 9,24 + 12,56
          = 33,8 cm

jawabannya D