Review with Circumference

What number is pi?

• 1.41

• 2.00

• 3.14

• 5.14

What is the "formal" definition of pi?

• 22/7
• 3.1415926
• the ratio of a circle's circumference to its diameter
• the surface area of a sphere of diameter 22/7

How many digits are in pi?

• 10 trillion
• 5 billion 
• infinite 
• a lot 

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

What is the diameter of a circle with radius 1 ft?

• 1ft
• 2ft
• 3ft
• IDK

Find the radius of a circle who's diameter is 40 ft.

• 40ft
• 80ft
• 20ft
• 45ft

Solve  3x - 7 = 32

• 13
• -13
• 12
• -12

Solve  12 - 6y = 24

• -1
• -2
• -3
• -4

Solve    8 - 2x = 30

• -11
• 11
• -12
• 12