tolong dijawab dong please

BCD = 1/2 × 4 × 16 = 32
ABC = 1/2 × 10 × 16 = 80
CDE = 1/2 × 15 × 16 = 120

ABC + DCE - 2(BCD)
80 + 120 - 2(32)
200 - 64 = 136cm^2

Maaf kalau salah