Grade 6 Circumference: Circles & Semicircles Challenge

A circular garden has a radius of 4 meters. What is the circumference of the garden?

• 8 meters

• 12 meters

• 16π meters

• 8π meters

A pizza has a diameter of 12 inches. Calculate the circumference of the pizza.

• 25.12 inches

• 40.84 inches

• 31.42 inches

• 37.68 inches

A semicircular track has a diameter of 20 meters. What is the circumference of the track?

• 15π meters

• 5π meters

• 20π meters

• 10π meters

A circular swimming pool has a radius of 5 feet. How much fencing is needed to go around the pool?

• 40 feet

• 25 feet

• 31.42 feet

• 15.7 feet

A round table has a circumference of 31.4 inches. What is the radius of the table?

• 4 inches

• 7 inches

• 5 inches

• 6 inches

A semicircle is part of a playground with a diameter of 10 meters. What is the circumference of the semicircle?

• 10 meters

• 15.71 meters

• 31.42 meters

• 5 meters

A circular fountain has a radius of 3 meters. How far would you walk if you went around the fountain once?

• 20 meters

• 15 meters

• 12.5 meters

• Approximately 18.85 meters

A bicycle wheel has a diameter of 26 inches. What is the circumference of the wheel?

• Approximately 81.68 inches

• Approximately 92.34 inches

• Approximately 65.12 inches

• Approximately 75.00 inches

A semicircular window has a radius of 2 feet. What is the circumference of the window?

• 2π + 4 feet

• 2π feet

• 4π feet

• 6 feet

A circular track has a circumference of 62.8 meters. What is the diameter of the track?

• 15 meters

• 20 meters

• 25 meters

• 30 meters