1. Look at this circle. What is the ratio representing pi?

^{8 cm}⁄_{8 cm}

^{16 cm}⁄_{8 cm}

^{50.3 cm}⁄_{16 cm}

^{50.3 cm}⁄_{8 cm}

2. Using the formula C = Πd, find the circumference of a circle with a 6.5 meter diameter. Round to the nearest tenth. Choose one:

19.5 m

20.4 m

13.5 m

20 m

3.

^{14 cm}⁄_{14 cm}

^{14 cm}⁄_{44 cm}

^{44 cm}⁄_{14 cm}

^{7 cm}⁄_{14 cm}

4.

42 cm

1 cm

9 cm

9.42 cm

5. Which word defines the approximation of 3.14?

cumla

zelta

devo

pi

6. Which of the following equations is correct concerning pi?

7. Which ratio identifies pi?

8. What is the circumference of this circle?

12.56 in.

25.12 in

50.24 in

100.48 in.

9. Using the formula C = Πd, find the circumference of a circle with a 20 cm radius. Round to the nearest tenth. Choose the closest measurement:

155.8 cm

125.6 cm

60.15 cm

60 cm

10.

12.32 inches

12.56 inches

7.57 inches

13 inches