Radius, Diameter, and Area: Circle Challenges for 5th Graders

A circular garden has a radius of 4 meters. What is the circumference of the garden? (Use π = 3.14)

• 25.12 meters

• 15.28 meters

• 31.42 meters

• 20.76 meters

If the diameter of a pizza is 12 inches, what is the area of the pizza? (Use π = 3.14)

• 113.04 square inches

• 150.72 square inches

• 78.5 square inches

• 94.25 square inches

A swimming pool is shaped like a rectangle with a length of 10 meters and a width of 5 meters. What is the area of the pool?

• 40 square meters

• 50 square meters

• 60 square meters

• 30 square meters

A circular track has a diameter of 20 feet. How long is the track? (Use π = 3.14)

• 75.4 feet

• 50 feet

• 62.8 feet

• 40 feet

If a circular table has a radius of 1.5 feet, what is the area of the table? (Use π = 3.14)

• 3.14 square feet

• 7.065 square feet

• 6.28 square feet

• 9.42 square feet

A round fountain has a circumference of 31.4 meters. What is the radius of the fountain? (Use π = 3.14)

• 10 meters

• 3 meters

• 7 meters

• 5 meters

A garden is 3 meters wide and 5 meters long. If you want to add a path around the garden that is 1 meter wide, what will be the new area of the garden plus the path?

• 25 square meters

• 40 square meters

• 30 square meters

• 35 square meters

If a circular rug has a radius of 2 feet, what is its circumference? (Use π = 3.14)

• 12.56 feet

• 15.70 feet

• 10.24 feet

• 8.00 feet

A circular pond has a diameter of 10 meters. How many square meters is the area of the pond? (Use π = 3.14)

• 78.5 square meters

• 50 square meters

• 31.4 square meters

• 100 square meters

A bicycle wheel has a radius of 0.35 meters. How far does the bicycle travel in one complete rotation of the wheel? (Use π = 3.14)

• 3.14 meters

• 2.198 meters

• 1.75 meters

• 2.5 meters