jawab ya pake cara nya besok di kumpulkan jawab yaaa

1) Luas = p x l
   10 4/8  = p x 3 4/12
     p = 84/8 x 12/40 = 63/20 = 3 3/20 cm

2) Panjang BC = BD - CD = 6 3/4 - 3 1/8 = 6 6/8 - 3 1/8 = 3 5/8
     Panjang AB = AD - BD = 12 4/5 - 6 3/4 = 12 16/20 - 6 15/20 = 6 1/20