224 cm²
Step-by-step explanation:
Look at the figure below.
All sides are in cm. All areas are in cm².
Triangle A:
A = bh/2 = 8 × 21 / 2 = 84
Rectangle B:
A = LW = 9 × 8 = 72
Rectangle C:
A = LW = 4 × 5 = 20
Triangle D:
A = bh/2 = 6 × 16 / 2 = 48
Total area = 84 + 72 + 20 + 48 = 224
224 cm²