HW: PEMDAS #2 (extra credit) Friday, 3/17/17 Write the IC and HW in your planner. IC: Ch. 8 day 2 HW: PEMDAS #2 (extra credit) Materials Pencil/Grading pen Slate/marker/eraser Math folder PEMDAS practice 1 1 1 1 1

Bellwork 28 m 2 m 1. Based on the picture above, what is the radius? 2. Based on the picture above, what is the diameter?

Mathematical Relationship Object Measured Distance across (diameter) Distance around (circumference) Mathematical Relationship Between the numbers Black container 10.5 cm 35.3 cm Red Lid 12.1 cm 39.3 cm Chargers cup 8cm 25.9 cm 3.36 3.25 3.24

Bellwork 9 m C  3•d C  3•d C  3•9 C  3•12 C  27 m C  36 cm 12 cm 3. What is the approximate circumference of the circle above? 4. What is the approximate circumference of the circle above? C  27 m C  36 cm

Bellwork C ≈ 24 cm C  3•d 8 cm 24  3•? 24  3•d 3 3 8  d 5. What is the approximate diameter of the circle above? 8  d The diameter is about 8 cm.

Let’s cement this in… On your slate, please explain how someone can find the circumference of a circle without measuring the distance around (like we did yesterday).

36 Area is the amount of square units it takes to cover a region. The area is about 48 squares.

Cut the circle into 4 pieces by cutting on the solid black lines.