Are and Circumference of Circles

What does "circumference" mean?

• Space a circle takes up
• Distance around a circle
• Line from one side of a circle to another
• Line from center of circle to side

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

Steven purchases a bowl. The diameter of the bowl is 14 cm. What is the circumference of the bowl?

• 28 cm
• 43.96 cm
• 87.96 cm
• 7 cm

What is the area of this circle?

• 82.13
• 78.5
• 314.16
• 170.12

What is the area of this circle?

• 6082.12
• 1519.76
• 1893.14
• 1292.92

Find the circumference of a circle with a diameter of 11 millimeters.

• 34.6 mm
• 30 mm
• 25.3 mm
• 34.54 mm

What is the circumference of a circle with a radius of 54 m?

• 339.12 m
• 169.56 m
• 84.78 m 

Find the circumference of a circle with a radius of 13.5 mm.

• 37.68mm
• 18.84mm
• 84.78 mm
• none of the above

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

• 3 m 
• 9.42 m
• 12 m
• 18.84 m

A segment whose endpoints lie on a circle.

• Chord

• Diameter

• Secant of a Circle

• Tangent to a Circle