Nomer 16 tolong dijawab ya kak mau di ikutin olimpiade nihh

Ljajargenjang = a x t
60 = 12 x t
t = 5 cm

s2 = 12+4 = 16 cm

Ltrapesium = (s1 + s2) x t / 2
= (12+16) x 5 / 2
= 28 x 5/2
= 14 x 5
= 70 cm²

Lsegitiga = 70-60 = 10 cm²

atau

Lsegitiga = a x t/2
= 4 x 5 / 2
= 10 cm²