Circles and Equations FINAL

How many digits are in pi?

• 10 trillion
• 5 billion 
• infinite 
• a lot 

solve for m

• -15
• 15
• 30
• -30

Rocky has a choice between 2 pizzas: a circular pizza with a 10-inch diameter, and a square pizza with a 9-inch side. Which statement below is true?

• The pizzas have the same area.

• The area of the square pizza is larger.

• The area of the circular pizza is larger.

• The area of the circular pizza is 100 square inches.

a

b

c

d

e

circumference

diameter

area

center

radius

Match the following

• Circumference

• Pi

• How many times the diameter wraps around the circle

• Diameter

• half the diameter

• Area

• double the radius

• Radius

_____________ is the distance around the circle

• circumference

• center

• radius

• diameter

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's area?

Round to the nearest tenth

What is Pi?

• The number of times the diameter wraps around the circle

• The number of times the radius wraps around the circle

• Twice the radius

• The number of times the circumference wraps around the circle