Luas Bangun ABCD adalah?

Semoga membantu yaaa ^_^

DC/GF = CB/FE
DC/8 = 25/10
DC = 25/10 × 8
DC = 20 cm

AB = CB/FE × AE
AB = 25/10 × 14
AB = 35 cm

CB^2 = DA^2 + (AB - DC)^2
25^2 = DA^2 + (35 - 20)^2
625 = DA^2 + 15^2
625 = DA^2 + 225
DA^2 = 625 - 225 = 400
DA = akar 400 = 20 cm

LABCD = (20 + 35)/2 × 20
= 55 × 10 = 550 cm^2 (C)

Semoga membantu