Vocab Pop Quiz Circumference/Area

How many degrees are in a cirlce?

• 90
• 180
• 270
• 360

The distance around a circle

• Diameter
• Radius
• Circumference
• Area

The distance from the center of a circle to the boundary of a circle (half of the diameter).

• Chord
• Diameter
• Radius
• Inscribed Angle

What is this called?

• Diameter

• Secant

• Tangent Line

• Radius

If my diameter is 19 inches, what is my radius?

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

If my radius is 10ft, what is my diameter?

• 20ft
• 5ft
• 31.4ft
• 62.8ft

what is the circumference of this circle ?

• 3.14 cm 
• 37.68 cm
• 24 cm
• 68.4 cm

What is the formula for finding the circumference for a circle?

• 2*π*r

• 1/2 b*h

• a+b/2*h

• length*width

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

• Radius
• Diameter

What is the formula to calculate the AREA of a circle?

• π*d

• π*r²

• 2*π*r

• π*r