Area and Circumference

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 circumference?

• 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.

Find the circumference of the circle

• 21.98
• 153.86
• 43.96
• 615.44

The radius is 8 inches.  What is the circumference?

• 50.24 inches
• 25.12 inches
• 12.56 inches
• 200.96 inches

What is the circumference of a circle with a diameter of 42 cm?

• 131.9 cm

• 121.9 cm

• 111.9 cm

• 141.9 cm

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.

A Circle has a radius of 4. What is the area of the circle? (Best Choice) (note: units are squared)

• 12.56

• 50.24

• 6.28

• 25.12

what is the area of a circle with the diameter of 16 cm ?

• 66 cm
• 200.96 cm
• 66.5 cm
• 10 m

A circular swimming pool is 21 feet in diameter.
How many feet around is the pool?

• 10.5 ft
• 42 ft
• 65.97 ft
• 131.88 ft