tolong memakai cara.....Smoga bisaa

DO = 24/2 = 12
13^2 - 12^2 = 5^2
20^2 - 12^2 = 16^2
Diagonal 1 = BD = 24cm
Diagonal 2 = CO + OA = 5 + 16 = 21cm
1/2 x d1 x d2 = luas
Luas = 1/2 x 24 x 21 = 252cm^2

B ya jawabannya :)

SemogaMembantu :D