tolong dijawab nomor 1 dan 2 ya...

1.
L = jumlah garis sejajar x 1/2 x t
L = 28 x 1/2 x 8
L = 14 x 8 = 112 cm²


2.
L = jumlah garis sejajar x 1/2 x t
L = 36 x 1/2 x 12
L = 18 x 12
L = 216 cm²