The unshaded part is the total area of both shapes minus the shaded overlap.

• Triangle area = 192 cm² (from part a).
• Rectangle area = 432 cm².
• Total area of both shapes = 192 + 432 = 624 cm².
• The shaded overlap (36 cm²) is counted twice, so subtract once:
• Total figure area = 624 − 36 = 588 cm².
• Unshaded area = Total figure area − shaded area = 588 − 36 = 552 cm².

Final Answer: 552 cm²