Circumference and Unit Conversion Fun for Grade 5

A circular garden has a diameter of 10 feet. What is the circumference of the garden? (Use 3.14 for pi)

• 15.7 feet

• 20 feet

• 31.4 feet

• 25.6 feet

If a bicycle tire has a circumference of 66 inches, how many feet is that? (Hint: 1 foot = 12 inches)

• 4 feet

• 5.5 feet

• 5 feet

• 6 feet

A round table has a circumference of 31.4 inches. What is the diameter of the table? (Use 3.14 for pi)

• 10 inches

• 8 inches

• 12 inches

• 15 inches

You want to put a fence around a circular playground with a radius of 15 meters. Estimate the circumference of the playground.

• Approximately 75 meters

• Approximately 120 meters

• Approximately 94.25 meters

• Approximately 60 meters

A circular swimming pool has a diameter of 12 feet. How many inches is the circumference? (Use 3.14 for pi and convert feet to inches)

• 452.16 inches

• 376.8 inches

• 120 inches

• 500 inches

If a pizza has a circumference of 18 inches, what is its radius? (Use 3.14 for pi)

• 9 inches

• 2.865 inches

• 3.14 inches

• 5.73 inches

A circular track has a circumference of 400 meters. How many kilometers is that? (Hint: 1 kilometer = 1000 meters)

• 0.25 kilometers

• 0.4 kilometers

• 1 kilometer

• 0.5 kilometers

You are making a circular cake with a diameter of 8 inches. Estimate the circumference to the nearest whole number.

• 15

• 25

• 20

• 30

A hula hoop has a circumference of 42 inches. How many feet is that? (Hint: 1 foot = 12 inches)

• 3.5 feet

• 3 feet

• 2.5 feet

• 4 feet

A circular fountain has a radius of 5 feet. What is the circumference of the fountain? (Use 3.14 for pi)

• 25.0 feet

• 31.4 feet

• 15.7 feet

• 40.0 feet