Circumference and Area Challenges with Circles

A circular garden has a radius of 5 meters. What is the circumference of the garden?

• 40.84 meters

• 25.00 meters

• 15.71 meters

• 31.42 meters

If the area of a circular pond is 78.5 square meters, what is the radius of the pond?

• 5 meters

• 3 meters

• 7 meters

• 10 meters

A bicycle wheel has a diameter of 26 inches. How far does the bicycle travel in one complete rotation of the wheel?

• 65 inches

• 100 inches

• 50 inches

• Approximately 81.68 inches

A pizza has a radius of 10 inches. What is the area of the pizza?

• 50π square inches

• 75π square inches

• 200 square inches

• 100π square inches

A circular swimming pool has a circumference of 31.4 meters. What is the radius of the pool?

• 5 meters

• 10 meters

• 7 meters

• 3 meters

If a circular track has a radius of 20 meters, what is the area of the track?

• 300π square meters

• 400π square meters

• 250 square meters

• 500π square meters

A round table has a diameter of 1.2 meters. What is the circumference of the table?

• 2.5 meters

• 3.14 meters

• 4.0 meters

• 3.77 meters

The area of a circular flower bed is 50.24 square feet. What is the diameter of the flower bed?

• 8 feet

• 12 feet

• 6 feet

• 10 feet

A hula hoop has a radius of 0.75 meters. What is the circumference of the hula hoop?

• 4.71 meters

• 6.28 meters

• 3.14 meters

• 5.25 meters

If a circular cake has an area of 113.04 square inches, what is the radius of the cake?

• 6 inches

• 7 inches

• 8 inches

• 5 inches