Circle Geometry Area Circumference

The diameter of a circle is 3 centimeters. What is the circumference?

• 11.5cm

• 9.42 cm

• unicorns are narwahls

• 45.3 cm

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

• 28 cm

• 43.98 cm

• 87.96 cm

• 7 cm

Daniel wants to buy cookies for her friend. The
radius of a cookie is 5 inches. What is the cookie’s 
circumference?

• 10 in

• 2.5 in

• 15.7 in

• 31.4 in 

The radius of a quarter circle is 4 inches. What is the quarter circle's perimeter.

• 12.63 in

• 14.28 in

• 10.68 in

• 13.63 in

The radius of a quarter circle is 3 inches. What is the quarter circle's perimeter.

• 11.91 in

• 10.47 in

• 10.71 in

• 9.11 in

The circumference of a circle is 25.12 cm. What is the circle's diameter?

• 10

• 9

• 8

• 6

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

• 20ft

• 5ft

• 31.4ft

• 62.8ft

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

• 10.5 ft

• 42 ft

• 65.94 ft

• 131.95 ft

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 38 mm

• 119.32 mm

A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?

• c = 15π

• C = 2π15

• c = 15 ÷ π

• c = 15 π