Circle Calculations: Fun with Circumference Problems

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

• 31.42 meters

• 15.71 meters

• 40.84 meters

• 25.00 meters

If a bicycle tire has a diameter of 26 inches, how far does the bike travel in one complete rotation of the tire?

• 65 inches

• Approximately 81.68 inches

• 100 inches

• 50 inches

A round swimming pool has a circumference of 31.4 feet. What is the radius of the pool?

• 3 feet

• 7 feet

• 10 feet

• 5 feet

A circular track has a circumference of 400 meters. If a runner completes 5 laps, how many meters have they run in total?

• 1800 meters

• 2500 meters

• 1500 meters

• 2000 meters

A pizza has a diameter of 12 inches. What is the circumference of the pizza?

• 37.68 inches

• 40.84 inches

• 31.42 inches

• 25.12 inches

A circular fountain has a radius of 3 feet. How much water would be needed to fill the fountain if the water level is 1 foot high?

• 50.27 cubic feet

• 15.70 cubic feet

• 12.56 cubic feet

• 28.26 cubic feet

A circular table has a circumference of 62.8 inches. What is the diameter of the table?

• 15 inches

• 25 inches

• 30 inches

• 20 inches

If a hula hoop has a circumference of 90 centimeters, what is the radius of the hula hoop?

• 10 cm

• 30 cm

• 20 cm

• 14.32 cm

A circular garden path has a diameter of 10 feet. How long is the path if you walk around it once?

• 31.42 feet

• 15.70 feet

• 40.84 feet

• 25.12 feet

A round clock has a radius of 6 inches. What is the circumference of the clock face?

• 12 inches

• 18 inches

• 12π inches

• 6π inches