IKMC 2022 - Grades 5-6 - Self-study Question 6

Question 6

ABCD is a square with side-length 10 cm. What is the area of the shaded part?

1. $40\text{ cm}^2$
2. $45\text{ cm}^2$
3. $50\text{ cm}^2$
4. $55\text{ cm}^2$
5. $60\text{ cm}^2$