1. Circles

2. Think-pair-share:

3. Diameter: distance Circumference: distance
across the circle through around the circle
its center
Radius: distance from Area: the number of
the center to an edge of square units inside that
the circle circle

4. Circumference Formulas Area Formula
C= d A= r2
C=2 r

5. https://www.youtube.com/watch?v=YokKp3pwVFc

7. What is pi?
https://www.youtube.com/watch?v=hJJJmQojcLM

8. What is (pi)?
the ratio of the circumference of a circle to the
diameter. Or in other words, the circumference
divided by the diameter.
c
d = 3.14159265358979323846...
Try these examples:
22 90 355 62832
7 24 113 20000

9. Find the area and
circumference of this
clock.
C=2 r A= r 2

10. Find the area and
circumference of this
eye ball.
C=2 r A= r 2

11. Find the area and
circumference of this
C=2 r A= r 2

12. HW: finish worksheet