IKMC 2010 - Grades 5-6 - Self-study Question 9

Question 9

What is the perimeter of the figure, whose angles are all right angles?

1. $3\times5+8\times2$
2. $6\times5+4\times2$
3. $6\times5+6\times2$
4. $6\times5+8\times2$