tolong bantuin kerjain aki nomor 62-63 please dengan cara makasih bsk kmpl

63. L ACD = 1/2 x AC x ED
= 1/2 x 13 x 11
= 71,5 cm^2
L ACB = 1/2 x AC x EB
= 1/2 x 13 x 3
= 19,5 cm^2
L ABCD = 71,5 - 19,5 = 52 cm^2