1. Objective: Find the circumference and area of circles

2. Circle – Label The parts Radius Diameter

3. C=2 r Circumference: C=2 r Circumference is the length of the distance AROUND the circle Take 2 times the radius and pi

4. Circumference: C=2r Find the circumference of a circle with radius 5. Find the circumference of a circle with diameter 10. 5 in. 10 in.

5. Circumference Find the circumference of a circle with radius 2. Find the circumference of a circle with diameter 8.

6. Area of a Circle AreaArea of a circle is the amount of space the circle covers.

7. Area of a Circle Find the area of a circle with radius 9. 9 feet

8. Find the area of the circles below. 1)2) 6 in. 16 m

9. Area of a Circle Find the area of a circle with radius 5.

10. Area of a Circle Find the area of a circle with diameter 24.

11. Instructional Conversation Problem #1 What is the formula for circumference?

12. Instructional Conversation Problem #2 Find the circumference. 4

13. Instructional Conversation Problem #3 What is the formula for area of a circle?

14. Instructional Conversation Problem #4 Find the area. 20