plis jawab dg caranya

Sisi bawah = 9+9+20 = 38cm
Sisi atas = 20cm
Tinggi = 12cm

Luas =20+38x12/2
=58x12/2 = 58x6 = 348cm²

Opsi (A)

Semoga membantu :)

Luas= 1/2x (p+l)x t
=1/2x (20+38)x 12
= 1/2x(58) x12
=348