Circle Challenges: Area, Circumference & Unit Conversion

A circular garden has a radius of 5 meters. What is the area of the garden in square meters?

• 100 square meters

• 78.5 square meters

• 31.4 square meters

• 50 square meters

If the circumference of a circular track is 31.4 meters, what is the radius of the track? (Use π = 3.14)

• 7 meters

• 10 meters

• 5 meters

• 3 meters

A pizza has a diameter of 12 inches. What is the area of the pizza in square inches?

• 24π

• 18π

• 36π

• 48π

A circular swimming pool has a radius of 10 feet. How many square feet of water are needed to fill the pool?

• 400 square feet

• 250 square feet

• 314 square feet

• 150 square feet

The circumference of a circular table is 62.8 inches. What is the diameter of the table? (Use π = 3.14)

• 30 inches

• 15 inches

• 20 inches

• 25 inches

A circular fountain has an area of 78.5 square feet. What is the radius of the fountain? (Use π = 3.14)

• 3 feet

• 10 feet

• 5 feet

• 7 feet

A wheel has a radius of 0.5 meters. How far does the wheel travel in one complete rotation? (Use π = 3.14)

• 1.57 meters

• 3.14 meters

• 2.5 meters

• 6.28 meters

If a circular cake has a circumference of 18.84 inches, what is the area of the cake? (Use π = 3.14)

• 18.84 square inches

• 12.56 square inches

• 28.26 square inches

• 31.42 square inches

A circular field has a diameter of 20 meters. What is the area of the field in square meters?

• 250 square meters

• 400 square meters

• 157 square meters

• 314.16 square meters

A circular pond has a radius of 4 yards. How many square yards of land does it cover?

• 8π square yards

• 12π square yards

• 16π square yards

• 20 square yards