tolong dijawab beserta caranya ya makasih :)

OB=√13²-5²
=√169-25
=√144=12 cm
d1= OB+OD=12+3=15 cm
d2= AC=10 cm
L=½×d1×d2
= ½×15×10
=15×5
=75 cm²
(A)

33) L = 24 x 32 : 2 = 384
L = AE x BC : 2
384 = AE x 20 : 2
AE = 384 : 20 : 2
AE = 9, 6 cm (A)
34) OB = √13² - 5²
             = 12
L = 10 x (12 + 3) :2
    = 5 x 15
    = 75 cm² (A)
Thanks