Area and Circumference of Circles (Unit 3)

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

• Radius
• Diameter

What is the diameter of a circle with a radius of 5.5 cm?

• 5.5 cm

• 2.25 cm

• 11 cm

• 2.5cm

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

• 40ft
• 80ft
• 20ft
• 45ft

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

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

Find the area of the circle

• 56.52
• 254.34
• 1017.36
• 113.04

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

What is the area of this circle?

• 15393.8

• 1225

• 219.8

• 3846.5

Find the circumference of a circle with a radius of 12.5 mm .

• 156.25mm

• 25mm

• 78.5mm

• 39.25mm