Ticket in the Door: Area and Circumference

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

• Diameter

• Radius

• I have no idea

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

• I have no idea

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

• 37.68mm

• 18.84mm

• 84.78 mm

• I have no idea

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

• I have no idea

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

• Diameter

• Radius

• I have no idea

What is the diameter?

• 8 cm

• 16 cm

• 10 cm

• 4 cm

• I have no idea

What is the area of a circle?

• The distance around a circle.

• The space inside the circle.

• A line from side to side passing through the center.

• A line from the center to the side.

• I have no idea

A circular window has a diameter of 24 inches. A piece of metal is to go around the window for a frame. How long does the metal need to be?

• 75.36 in

• 37.68

• 1,808.64 in

• 452.16 in

• I have no idea

A flower pot has a radius of 8 inches. What is the area of the (top of the) flower pot?

• 12.56 in²

• 25.12 in²

• 50.24 in²

• 200.96 in²

• I have no idea

A circle has a diameter of 18. What is the area of the circle? (note: units are squared)

• 1017.36 u²

• 254.34 u2

• 56.52 u²

• 28.26 u²

• I have no idea