tolong dijawab ya besok dikumpulin

L = a + b/2 x t
60cm^2 = 2x + 3x/2 x 6
60cm^2 = 5x/2 x 6
60cm^2 = 15x
x = 4

2x = 2(4) = 8
3x = 3(4) = 12

B. 8cm dan 12cm

jawabannya b ya. proses ada di soal