The figure shows three squares of different sizes. The shaded part is the largest square
minus the two smaller squares.
• From the figure, the side of the largest square = 15 cm, area = 15² = 225 cm².
• The two smaller squares have sides 10 cm and 5 cm.
• Areas: 10² = 100 cm² and 5² = 25 cm².
• Shaded area = 225 − 100 − 25 = 100 cm².
Final Answer: 100 cm²