Area Circumference Ineq 24

How many digits are in pi?

• 10 trillion
• 5 billion 
• infinite 
• 3

Which of these ratios is the closest approximation of pi?

HINT: DIVIDE them in your calcumator

• 13/4

• 16/5

• 19/6

• 22/7

_____________ is the distance around the circle

• circumference

• center

• radius

• diameter

_____________ is half of the diameter

• circumference

• center

• radius

• diameter

_____________ is twice the radius

• circumference

• center

• radius

• diameter

Label the Circle

a

b

c

d

e

Circumference

Center

Radius

Area

Diameter

Match the following

Groups:

(a) Area of a Circle

,

(b) Circumference

• The INSIDE of the circle

• The OUTSIDE of the circle

• in

Find the Circumference of the circle

Round to the nearest tenth

Find the Area of the circle

Round to the nearest tenth

x is less than 9

• x < 9
• x > 9
• x ≥ 9
• x ≤ 9