1. Bellwork Most Missed Quarter III Exam (58.9%): Find the perimeter of if AB = 16 cm, and.

2. 11.1 Understanding Area Students will be able to solve problems requiring general area ideas.

3. Think… What is area? How is it measured? Find the area of this space below: How is area used in the “real world”? Compare/Share with your partner.

4. Group work In groups of 4, discuss the problems you’ve been given. Come to a solution. We will discuss them at the end of class.

5. Example 1 Find the area of a rectangle that has a perimeter of 20 cm. The width of the rectangle is one more than twice the length.

6. Example 2 Find the area of a square with diagonal ft.

7. Example 3 Find the area of the shaded region.

8. Example 4 If the ratio of the sides of a rectangle are 4:5 and the area is 320 square units, find the measure of the sides.

9. Answers 1. 21 cm 2 2. 144 ft 2 3. 14 u 2 4. 16 u x 20 u

10. Homework Pg. 513 # 1, 4, 5,10-13, 15